CN106460840B - Compressor and the refrigerating circulatory device for using it - Google Patents

Compressor and the refrigerating circulatory device for using it Download PDF

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Publication number
CN106460840B
CN106460840B CN201580026285.9A CN201580026285A CN106460840B CN 106460840 B CN106460840 B CN 106460840B CN 201580026285 A CN201580026285 A CN 201580026285A CN 106460840 B CN106460840 B CN 106460840B
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China
Prior art keywords
pressure
compressor
temperature
scroll
refrigerant
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CN201580026285.9A
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Chinese (zh)
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CN106460840A (en
Inventor
藤高章
咲间文顺
川边义和
作田淳
中井启晶
佐藤成广
高市健二
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Priority claimed from JP2015040850A external-priority patent/JP6507364B2/en
Priority claimed from JP2015040848A external-priority patent/JP6507363B2/en
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority claimed from PCT/JP2015/002256 external-priority patent/WO2015174032A1/en
Publication of CN106460840A publication Critical patent/CN106460840A/en
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Publication of CN106460840B publication Critical patent/CN106460840B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/008—Lubricant compositions compatible with refrigerants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0253—Details concerning the base
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0269—Details concerning the involute wraps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0269—Details concerning the involute wraps
    • F04C18/0292—Ports or channels located in the wrap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/12—Hydrocarbons
    • C09K2205/122—Halogenated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/12—Hydrocarbons
    • C09K2205/126—Unsaturated fluorinated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/22—All components of a mixture being fluoro compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/32—The mixture being azeotropic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/04—Well-defined cycloaliphatic compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/09—Characteristics associated with water
    • C10N2020/097—Refrigerants
    • C10N2020/101—Containing Hydrofluorocarbons
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/803—Electric connectors or cables; Fittings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/01—Timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/026—Compressor control by controlling unloaders
    • F25B2600/0262—Compressor control by controlling unloaders internal to the compressor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

Refrigerant containing R1123 (1,1,2- trifluoro-ethylene) is used as working fluid, and polyalcohol ester oil is used as compressor lubricating oil by compressor of the invention.And, comprising: the fixed scroll (12) and convolution scroll (13) that the scroll wrap of vortex shape is erected from end plate；With the discharge chambe (15) for making fixed scroll (12) and circle round scroll (13) engagement and formation.In addition, being equipped with: the tap (18) for being set to the end plate central position of fixed scroll (12) and being open to discharge room (31)；Set on fixed scroll (12) end plate and at the time of being connected to discharge chambe (15) with tap (18) at the time of difference by discharge chambe (15) and discharge room (31) connection by-pass prot (68)；Be set to by-pass prot (68) and allow laterally to be discharged from discharge chambe (15) room (31) side circulation check-valves.

Description

Compressor and the refrigerating circulatory device for using it
Technical field
The present invention relates to use the compressor of the working fluid containing R1123 and use its refrigerating circulatory device.
Background technique
In general, in refrigerating circulatory device, by by compressor, four-way valve (as needed), radiator (or condensation Device), the pressure reducers such as capillary or expansion valve and evaporator etc. carry out piping and connect, and constitute refrigeration cycle.Moreover, logical Crossing recycles refrigerant inside it, carries out cooling effect or heat effect.
As the refrigerant in these refrigerating circulatory devices, it is known to which being known as freon, (freon is recorded as R 00 Or R 000, but limited according to U.S.'s ASHRAE34 standard.Hereinafter, be represented simply as R 00 or R 00 zero), by methane Or the halogenated hydrocarbons of ethane derivative.
As refrigerating circulatory device refrigerant as described above, R410A is used mostly.But R410A refrigerant is complete Ball warms potentiality (GWP) greatly 1730, and from the viewpoint of preventing from greenhouse effects of the earth, there are projects.
Therefore, from the viewpoint of preventing from greenhouse effects of the earth, as the lesser refrigerant of GWP, such as R1123 is proposed (1,1,2- trifluoro-ethylene) and R1132 (1,2- difluoroethylene) (referring for example to patent document 1 or patent document 2).
But compared with the existing refrigerant such as R410A, R1123 (1,1,2- trifluoro-ethylene) and R1132 (1,2- difluoro Ethylene) stability it is low, in the case where generating free radical, other compounds may be become due to disproportionated reaction.Disproportionation is anti- It should be discharged along with a large amount of heat, it is possible that reducing the reliability of compressor and refrigerating circulatory device.Therefore, by R1123 Or it in the case that R1132 is for compressor and refrigerating circulatory device, needs to inhibit the disproportionated reaction.
Existing technical literature
Patent document
Patent document 1: International Publication No. 2012/157764
Patent document 2: International Publication No. 2012/157765
Summary of the invention
The present invention is researched and developed in view of above-mentioned existing project, in the compressor for purposes such as such as air conditioners In, the specific form for being more suitable for the compressor using the working fluid containing R1123.Additionally, it is provided one kind is more suitable for using containing There is the refrigerating circulatory device of the working fluid of R1123.
The present invention provides a kind of compressor, and the refrigerant that will contain 1,1,2- trifluoro-ethylene is used as working fluid, and will be more First polyol ester oil is used as compressor lubricating oil.And, comprising: the fixed scroll and return that the scroll wrap of vortex shape is erected from end plate Vortex rotating part；With the discharge chambe for making fixed scroll and the engagement of convolution scroll and being formed.Further include: set on fixed scroll End plate central position, to discharge room be open tap；Be set to fixed scroll end plate on, and with discharge chambe and row The by-pass prot for being connected to discharge chambe with discharge room at the time of difference at the time of connection of portalling.In addition, having set on by-pass prot and permitting Perhaps the check-valves of the circulation from discharge chambe side to discharge room side.
In addition, the present invention provides a kind of compressor, the refrigerant that will contain 1,1,2- trifluoro-ethylene is used as working fluid, and Polyalcohol ester oil is used as compressor lubricating oil.And, comprising: the fixed scroll that the scroll wrap of vortex shape is erected from end plate With convolution scroll；Make fixed scroll and the discharge chambe of circle round scroll engagement and formation；It is formed in the whirlpool of convolution scroll Revolve the 1st discharge chambe of tooth outer wall side；With the 2nd discharge chambe of the scroll wrap inner wall side for being formed in convolution scroll.Moreover, the 1st pressure The sucking volume of the 2nd discharge chambe of sucking volumetric ratio of contracting room is big.
In addition, the present invention provides a kind of refrigerating circulatory device, comprising: above-mentioned compressor；Will to being compressed by the compressor and Refrigerant gas as high pressure carries out cooling condenser；The section that high-pressure refrigerant after being liquefied by condenser is depressurized Flow mechanism；To being throttled the evaporator that gasifies of refrigerant after mechanism decompression；With by compressor, condenser, throttle mechanism With the piping of evaporator connection.
As previously discussed, in accordance with the invention it is possible to obtain being more suitable for using the working fluid containing R1123 compressor and Refrigerating circulatory device.
Detailed description of the invention
Fig. 1 is the system construction drawing for having used the refrigerating circulatory device of compressor of first embodiment of the present invention.
Fig. 2 be calculate in first embodiment of the present invention, the hybrid working fluid of R1123 and R32, R32 becomes 30 weights Measure under 60 weight % mixed proportion below of % or more the, pressure of refrigeration cycle, temperature, compressor displacement volume it is identical when Refrigerating capacity and cycle efficieny (COP) and the figure compared with R410A and R1123.
Fig. 3 be calculate in first embodiment of the present invention, the hybrid working fluid of R1123 and R32, R32 becomes 30 weights Measure under 60 weight % mixed proportion below of % or more the, pressure of refrigeration cycle, temperature, compressor displacement volume it is identical when Refrigerating capacity and cycle efficieny (COP) and the figure compared with R410A and R1123.
Fig. 4 be calculate in first embodiment of the present invention, the hybrid working fluid of R1123 and R125, R125 becomes 30 Under 60 weight % mixed proportion below of weight % or more the, pressure of refrigeration cycle, temperature, the displacement volume of compressor are identical When refrigerating capacity and cycle efficieny (COP) and the figure compared with R410A and R1123.
Fig. 5 be calculate in first embodiment of the present invention, the hybrid working fluid of R1123 and R125, R125 becomes 30 Under 60 weight % mixed proportion below of weight % or more the, pressure of refrigeration cycle, temperature, the displacement volume of compressor are identical When refrigerating capacity and cycle efficieny (COP) and the figure compared with R410A and R1123.
Fig. 6 be calculate it is in first embodiment of the present invention, the mixed proportion of R32 and R125 is fixed to 50 weights Refrigerating capacity when measuring % and mixing with the R1123, pressure of refrigeration cycle, temperature, the displacement volume of compressor are identical and Cycle efficieny (COP) and the figure compared with R410A and R1123.
Fig. 7 be calculate it is in first embodiment of the present invention, the mixed proportion of R32 and R125 is fixed to 50 weights Amount % and with R1123 mix when, the displacement volume of the pressure of refrigeration cycle, temperature, compressor it is identical when refrigerating capacity and follow Ring efficiency (COP) and the figure compared with R410A and R1123.
Fig. 8 is the longitudinal section of the scroll compressor of first embodiment of the present invention.
Fig. 9 is the major part amplification sectional view of the compression mechanical part of the scroll compressor of first embodiment of the present invention.
Figure 10 be indicate the compression mechanical part of the scroll compressor of first embodiment of the present invention compression cell structure it is flat Face figure.
Figure 11 (is compared in first embodiment of the present invention the case where (be equipped with by-pass prot) and the case where being not provided with by-pass prot Example) under, the figure of the comparison of the pressure for illustrating each discharge chambe.
Figure 12 is the discharge chambe for indicating the compression mechanical part of the scroll compressor of variation of first embodiment of the present invention Structure plan view.
Figure 13 is the partial cross-sectional view for indicating the construction near the power supply terminal of the compressor of first embodiment of the present invention.
Figure 14 is the figure for the structure for illustrating the refrigerating circulatory device of second embodiment of the present invention.
Figure 15 is the Mollier line chart for illustrating the movement of the refrigerating circulatory device in second embodiment of the present invention.
Figure 16 is the Mollier line chart for illustrating the control action of the variation 1 in second embodiment of the present invention.
Figure 17 is the control of the variation 2 for the control method for indicating the refrigerating circulatory device in second embodiment of the present invention The Mollier line chart of movement.
Figure 18 is the pipe-fitting joint for indicating to constitute a part of the piping of the refrigerating circulatory device of second embodiment of the present invention Figure.
Figure 19 is the figure for indicating the structure of refrigerating circulatory device of third embodiment of the present invention.
Figure 20 is the figure for indicating the structure of refrigerating circulatory device of fourth embodiment of the present invention.
Figure 21 is the figure for indicating the movement of the refrigerating circulatory device of fourth embodiment of the present invention on Mollier line chart.
Figure 22 is the major part amplification section of the compression mechanical part of the scroll compressor of fifth embodiment of the present invention Figure.
Figure 23 is the system construction drawing for having used the refrigerating circulatory device of compressor of sixth embodiment of the present invention.
Figure 24 be calculate in sixth embodiment of the present invention, the hybrid working fluid of R1123 and R32, R32 becomes 30 Under 60 weight % mixed proportion below of weight % or more the, pressure of refrigeration cycle, temperature, the displacement volume of compressor are identical When refrigerating capacity and cycle efficieny (COP) and the figure compared with R410A and R1123.
Figure 25 be calculate in sixth embodiment of the present invention, the hybrid working fluid of R1123 and R32, R32 becomes 30 Under 60 weight % mixed proportion below of weight % or more the, pressure of refrigeration cycle, temperature, the displacement volume of compressor are identical When refrigerating capacity and cycle efficieny (COP) and the figure compared with R410A and R1123.
Figure 26 be calculate in sixth embodiment of the present invention, the hybrid working fluid of R1123 and R125, R125 becomes Under 30 weight % or more, 60 weight % mixed proportion below, refrigeration cycle pressure, temperature, the displacement volume phase of compressor Refrigerating capacity simultaneously and cycle efficieny (COP) and the figure compared with R410A and R1123.
Figure 27 be calculate in sixth embodiment of the present invention, the hybrid working fluid of R1123 and R125, R125 becomes Under 30 weight % or more, 60 weight % mixed proportion below, refrigeration cycle pressure, temperature, the displacement volume phase of compressor Refrigerating capacity simultaneously and cycle efficieny (COP) and the figure compared with R410A and R1123.
Figure 28 be calculate it is in sixth embodiment of the present invention, the mixed proportion of R32 and R125 is fixed to 50 weights Refrigerating capacity when measuring % and mixing with the R1123, pressure of refrigeration cycle, temperature, the displacement volume of compressor are identical and Cycle efficieny (COP) and the figure compared with R410A and R1123.
Figure 29 be calculate it is in sixth embodiment of the present invention, the mixed proportion of R32 and R125 is fixed to 50 weights Refrigerating capacity when measuring % and mixing with the R1123, pressure of refrigeration cycle, temperature, the displacement volume of compressor are identical and Cycle efficieny (COP) and the figure compared with R410A and R1123.
Figure 30 is the longitudinal section of the scroll compressor of sixth embodiment of the present invention.
Figure 31 is the major part amplification section of the compression mechanical part of the scroll compressor of sixth embodiment of the present invention Figure.
Figure 32 is the state for indicating in sixth embodiment of the present invention, scroll of circling round being engaged to fixed scroll Figure.
Figure 33 is the pressure rise curve for indicating the 1st discharge chambe and the 2nd discharge chambe in sixth embodiment of the present invention Figure.
Figure 34 is to indicate in sixth embodiment of the present invention, convolution scroll is engaged to fixed scroll and from convolution whirlpool The figure of the state of the overleaf observing of rotating part.
Figure 35 is to indicate that the part of the construction near the power supply terminal of the scroll compressor of sixth embodiment of the present invention is cut Face figure.
Figure 36 is the figure for illustrating the structure of the refrigerating circulatory device in seventh embodiment of the present invention.
Figure 37 is the Mollier line chart for illustrating the movement of the refrigerating circulatory device in seventh embodiment of the present invention.
Figure 38 is the Mollier line chart for illustrating the control action of the variation 1 in seventh embodiment of the present invention.
Figure 39 is the control of the variation 2 for the control method for indicating the refrigerating circulatory device in seventh embodiment of the present invention The Mollier line chart of movement.
Figure 40 is the pipe-fitting joint for indicating to constitute a part of the piping of the refrigerating circulatory device of seventh embodiment of the present invention Figure.
Figure 41 is the figure for indicating the structure of refrigerating circulatory device of eighth embodiment of the present invention.
Figure 42 is the figure for indicating the structure of refrigerating circulatory device of ninth embodiment of the present invention.
Figure 43 is the figure for indicating the movement of the refrigerating circulatory device of ninth embodiment of the present invention on Mollier line chart.
Figure 44 is the sectional view of the scroll compressor of tenth embodiment of the present invention.
Specific embodiment
In the following, being described with reference to embodiments of the present invention.Wherein the present invention is not limited to these embodiments.
(the 1st embodiment)
Illustrate the 1st embodiment of the invention first.
Fig. 1 is the system construction drawing for having used the refrigerating circulatory device 100 of compressor 61 of first embodiment of the present invention.
As shown in Figure 1, the refrigerating circulatory device 100 of present embodiment is the case where being for example set as cooling supply dedicated circulation Under, mainly it is made of compressor 61, condenser 62, throttle mechanism 63 and evaporator 64.Moreover, these equipment utilizations piping connects Knot, recycles working fluid (refrigerant).
In the refrigerating circulatory device 100 constituted like that above, refrigerant becomes liquid by pressurization and at least one cooling Body, and gas is become by least one of decompression and heating.Compressor 61 is by motor drive, by the gas system of low-temp low-pressure Refrigerant pressurization at high temperature and pressure gas refrigerant and be transported to condenser 62.In condenser 62, the gas of high temperature and pressure Refrigerant utilizes the cooling condensation of air by air-supplies such as fans, and becomes the liquid refrigerant of cryogenic high pressure.The liquid refrigerant It is depressurized using throttle mechanism 63, a part becomes the gas refrigerant of low-temp low-pressure, and remainder becomes low-temp low-pressure Liquid refrigerant, and it is transported to evaporator 64.In evaporator 64, the liquid refrigerant of low-temp low-pressure is utilized is blown by fan etc. Air heating and evaporate, become the gas refrigerant of low-temp low-pressure, be again sucked into compressor 61 and pressurize.It repeats Carry out this circulation.
In addition, being illustrated as the dedicated refrigerating circulatory device 100 of cooling supply, but also can certainly in above description Using four-way valve etc., work as heat supply circulation device.
In addition, constitute in condenser 62 and evaporator 64, the heat-transfer pipe of the refrigerant flow path of at least some heat exchanger it is excellent Choosing is the aluminium refrigerant pipe containing aluminum or aluminum alloy.Especially in terms of reducing condensation temperature or making evaporating temperature rising On, it is however preferred to have the flat tube of multiple refrigerant passing holes.
The working fluid (refrigerant, work refrigerant) for being sealing into the refrigerating circulatory device 100 of present embodiment is by (1) The hybrid working fluid for the bicomponent system that R1123 (1,1,2- trifluoro-ethylene) and (2) R32 (difluoromethane) is constituted, especially R32 is 30 weight % or more, 60 weight % hybrid working fluid below.
In the application to aftermentioned scroll compressor 200, by mixing the R32 of 30 weight % or more in R1123, It is able to suppress the disproportionated reaction of R1123.The concentration of R32 is higher, can more further suppress disproportionated reaction.This is because passing through R32, smaller to the polarization of fluorine atom and bring mitigates the effect of disproportionated reaction；With the physical characteristic due to R1123 and R32 It is similar so bring makes the effect of the reaction chance reduction of disproportionation due to integrated behavior when the phase changes such as condensing, evaporate, It is able to suppress the disproportionated reaction of R1123.
In addition, the mix refrigerant of R1123 and R32 is that 30 weight %, R1123 are 70 weight % and have altogether due to R32 Boiling point, there is no temperature downslides, similarly handle so being able to carry out with unitary system cryogen.In addition, when mixing 60 weight % with On R32 when, temperature downslide becomes larger, it may be difficult to progress similarly handled with unitary system cryogen, it is advantageous to mix 60 weights Measure % R32 below.Especially for preventing from being disproportionated, and temperature is further reduced close to azeotropic point and is glided, and makes equipment Design is easy, and preferably mixes R32 with 40 weight % or more, 50 weight % ratio below.
Fig. 2 and Fig. 3 be calculate in first embodiment of the present invention, the hybrid working fluid of R1123 and R32, R32 at For pressure under 30 weight % or more, 60 weight % mixed proportion below, refrigeration cycle, temperature, compressor displacement volume Refrigerating capacity and cycle efficieny (COP) when identical and the figure compared with R410A and R1123.
Firstly, the design conditions of explanatory diagram 2 and Fig. 3.In recent years, in order to improve the cycle efficieny of equipment, heat exchanger High performance development, under actual operating condition, condensation temperature is reduced, and evaporating temperature is in the tendency risen, discharge temperature It is also at the tendency of reduction.Accordingly, it is considered to arrive actual operating condition, the refrigeration design conditions of Fig. 2 are set as setting with air conditioning It is standby for blowdown firing when (27 DEG C of indoor dry-bulb temperature, 19 DEG C of wet-bulb temperature, 35 DEG C of outdoor dry-bulb temperature) corresponding condition, evaporation Temperature is set as 15 DEG C, and condensation temperature is set as 45 DEG C, and the degree of superheat of the sucking refrigerant of compressor is set as 5 DEG C, condensator outlet Degree of subcooling is set as 8 DEG C.
In addition, when the heating design conditions of Fig. 3 are the warming operations with the apparatus of air conditioning (20 DEG C of indoor dry-bulb temperature, 7 DEG C of outdoor dry-bulb temperature, 6 DEG C of wet-bulb temperature) corresponding design conditions, evaporating temperature is set as 2 DEG C, and condensation temperature is set as 38 DEG C, The degree of superheat of the sucking refrigerant of compressor is set as 2 DEG C, and the degree of subcooling of condensator outlet is set as 12 DEG C.
As shown in Figures 2 and 3 it is found that by mixing R32 with 30 weight % or more, 60 weight % ratio below, in cooling supply When with warming operation, compared with R410A, refrigerating capacity increase about 20%, cycle efficieny (COP) becomes 94~97%, and the whole world becomes Warm potentiality can reduce to the 10~20% of R410A.
As described above, it in the bicomponent system of R1123 and R32, is comprehensively glided according to the preventing of disproportionation, temperature Size, for blowdown firing when warming operation when ability and COP (that is, being particularly adapted to use aftermentioned scroll compressor When the mixed proportion of 200 apparatus of air conditioning), the preferably R32 containing 30 weight % or more, 60 weight % ratio below Mixture.The mixture of R32 more preferably containing 40 weight % or more, 50 weight % ratio below.
1 > of variation of < working fluid
In addition, the working fluid for being sealing into the refrigerating circulatory device 100 of present embodiment can serve as reasons (1) R1123 (1,1, 2- trifluoro-ethylene) and (2) R125 (tetrafluoroethane) constitute bicomponent system hybrid working fluid, especially R125 be 30 weights Measure 60 weight % of % or more hybrid working fluid below.
In the application to aftermentioned scroll compressor 200, by mixing the R125 of 30 weight % or more, it is able to suppress The disproportionated reaction of R1123.The concentration of R125 is higher, can more further suppress disproportionated reaction.This is because by R125, And bring smaller to the polarization of fluorine atom mitigates the effect of disproportionated reaction；With due to R1123 it is similar with the physical characteristic of R125 So bring makes the effect of the reaction chance reduction of disproportionation due to integrated behavior when the phase changes such as condensation evaporation, can press down The disproportionated reaction of R1123 processed.In addition, R125 is noninflammability refrigerant, so R125 can reduce the flammability of R1123.
Fig. 4 and Fig. 5 be calculate in first embodiment of the present invention, the hybrid working fluid of R1123 and R125, R125 Displacement as pressure under 30 weight % or more, 60 weight % mixed proportion below, refrigeration cycle, temperature, compressor is held Refrigerating capacity and cycle efficieny (COP) when product is identical and the figure compared with R410A and R1123.In addition, the calculating of Fig. 4 and Fig. 5 Condition is same as the design conditions of Fig. 2 and Fig. 3 respectively.
As shown in Figure 4 and Figure 5 it is found that by mixing R125 with 30 weight % or more, 60 weight % ratio below, with R410A is compared, and refrigerating capacity becomes 96~110%, and cycle efficieny (COP) becomes 94~97%.
Especially by mixing 40 weight % or more, 50 weight % R125 below, the disproportionation of R1123 can be prevented, and Discharge temperature is reduced, so becoming easy when the high loaded process of discharge temperature rising with the design of equipment when freezing and refrigeration. Moreover, global warming potential can be reduced to the 50~100% of R410A.
As described above, in the bicomponent system of R1123 and R125, comprehensively according to the preventing of disproportionation, flammability Reduction, for blowdown firing when warming operation when ability, COP and discharge temperature (that is, being particularly adapted to use aftermentioned vortex When the mixed proportion of the apparatus of air conditioning of formula compressor 200), it is preferably below containing 30 weight % or more, 60 weight % The mixture of R125, the more preferably mixture containing 40 weight % or more, 50 weight % R125 below.
2 > of variation of < working fluid
In addition, the working fluid for being sealing into the refrigerating circulatory device of present embodiment be also possible to by (1) R1123 (1,1, 2- trifluoro-ethylene), the hybrid working stream of three compositions system that constitutes of (2) R32 (difluoromethane) and (3) R125 (tetrafluoroethane) Body.The mixed proportion for being especially also possible to mix R32 and R125 is 30 mixing ratio more than or lower than 60 weight % and R1123 Example is hybrid working fluid of the 40 weight % more than or lower than 70 weight %.
In the application to aftermentioned scroll compressor 200, by the way that the mixed proportion for mixing R32 and R125 is set as 30 Weight % or more is able to suppress the disproportionated reaction of R1123.In addition, the mixed proportion of mixing R32 and R125 is higher, it more can be into One step inhibits disproportionated reaction.In addition, R125 can reduce the flammability of R1123.
Fig. 6 and Fig. 7 be calculate it is in first embodiment of the present invention, the mixed proportion of R32 and R125 is fixed to 50 Weight % and when being mixed with R1123, the pressure of refrigeration cycle, temperature, the displacement volume of compressor it is identical when refrigerating capacity With cycle efficieny (COP), and the figure compared with R410A and R1123.In addition, the design conditions of Fig. 6 and Fig. 7 respectively with Fig. 2 and figure 3 design conditions are same.
As shown in Figure 6 and Figure 7 it is found that by the way that the mixed proportion for mixing R32 and R125 is set as 30 weight % or more, 60 weights % is measured hereinafter, refrigerating capacity becomes 107~116%, and cycle efficieny (COP) becomes 93~96% compared with R410A.
40 weight % or more, 50 weight % is set as hereinafter, can especially by by the mixed proportion for mixing R32 and R125 It prevents from being disproportionated, and reduces discharge temperature, also can reduce flammability.Moreover, R410A can be reduced to global warming potential 60~30%.
In addition, in 2 > of variation of < working fluid, by the mixing of the R32 of the working fluid of three compositions system and R125 Ratio is set to 50 weight % and is illustrated, but the mixed proportion of R32 can also be set as to 0 weight % or more and 100 weights % is measured hereinafter, in the case where increasing refrigerating capacity, the mixed proportion of R32 can also be increased.On the contrary, when reducing the mixed of R32 Composition and division in a proportion example, and when the mixed proportion of increase R125, it can reduce discharge temperature, and reduce flammability.
As described above, in the three compositions system of R1123, R32 and R125, comprehensively according to the preventing of disproportionation, fire Burn property reduction, for blowdown firing when warming operation when ability, COP and discharge temperature (that is, being particularly adapted to use aftermentioned When the mixed proportion of the apparatus of air conditioning of scroll compressor 200), preferably mix R32 and R125 and by R32's and R125 Be set as 30 weight % or more, 60 weight % mixture below.It is more preferably below containing 40 weight % or more, 50 weight % The mixture of the sum of R32 and R125.
Then, the structure of the scroll compressor 200 of an example of the compressor 61 as present embodiment is illustrated.
Fig. 8 is the longitudinal section of the scroll compressor 200 of first embodiment of the present invention, and Fig. 9 is the scroll compressor The major part amplification sectional view of 200 compression mechanical part 2, Figure 10 are the compression mechanical parts 2 for indicating the scroll compressor 200 Discharge chambe 15 structure plan view.Hereinafter, illustrating its structure, movement and effect to scroll compressor 200.
As shown in figure 8, the scroll compressor 200 of first embodiment of the present invention has closed container 1 and closed container 1 Internal compression mechanical part 2, motor part 3 and store oil portion 20.
Illustrate the details of compression mechanical part 2 using Fig. 9.Compression mechanical part 2 includes welding or hot jacket etc. and is fixed on closed Base bearing component 11 in container 1；It is pivotally supported axis 4 in the base bearing component 11；Stop with by spiral shell in the base bearing component 11 On fixed scroll 12.Compression mechanical part 2 sandwiches between base bearing component 11 and fixed scroll 12 and fixed scroll 12 engagement convolution scrolls 13 and constitute.
It is equipped with the rotation for preventing convolution scroll 13 between convolution scroll 13 and base bearing component 11 and guides It is set to carry out the rotations limiting mechanisms 14 such as the cross slip-ring of circular orbit movement.Using the eccentric axial portion 4a of the upper end in axis 4, make Scroll 13 of circling round carries out eccentric drive, and thereby, it is possible to make the progress circular orbit movement of scroll 13 of circling round.In addition, fixed scroll The scroll wrap that part 12 and convolution scroll 13 are respectively provided with vortex shape erects the construction of (protrusion) from end plate.
The discharge chambe 15 that fixed scroll 12 is formed in as a result, between scroll 13 of circling round, makes work refrigerant from outer Side is with reducing volume mobile to central portion, thus via the suction line 16 and fixed scroll 12 passed to outside closed container 1 The suction inlet 17 of peripheral part sucks work refrigerant, and after being closed in discharge chambe 15, is compressed.Reach regulation The work refrigerant of pressure from the through hole i.e. tap 18 of the central portion (end plate central position) for being formed in fixed scroll 12, With the i.e. circular by-pass prot of through hole on the end plate of fixed scroll 12, being formed in the position different from tap 18 68, it pushes open leaf valve 19 (check-valves), and be discharged to discharge room 31.
It is the space formed by the muffler 32 being arranged in a manner of covering tap 18 that room 31, which is discharged,.It is expelled to discharge room 31 work refrigerant is discharged via the access for being set to compression mechanical part 2 into closed container 1.It is expelled in closed container 1 Work refrigerant via discharge pipe 50, be discharged from closed container 1 to refrigerating circulatory device 100.
In addition, the excessive deformation bring in order to avoid leaf valve 19 is damaged, the valve guard 69 equipped with limitation lift amount.This Outside, leaf valve 19 is set on the end plate face of the forming position of the by-pass prot 68 of such as end plate of fixed scroll 12.
In addition, as shown in figure 8, axis 4 the other end be equipped with pump 25, pump 25 suction inlet to be present in store oil portion 20 Mode configures.Pump 25 drives simultaneously with scroll compressor 200, so regardless of pressure condition and running speed, it can be reliable Ground sucts the compressor in the store oil portion 20 in the bottom that closed container 1 is arranged in lubricating oil 6 (oil, refrigerator oil), also disappears The insufficient worry of oil removing.
The compressor sucted from the pump 25 lubricating oil 6 passes through the oily supply hole 26 (referring to Fig. 9) in perforation axis 4 to compression Mechanism part 2 supplies.In addition, the compressor lubricating oil 6 is by utilizing oil filter etc. before being sucted by pump 25 or after sucting Foreign matter is removed, foreign matter can be prevented to be mixed into compression mechanical part 2, can be realized and further increase reliability.
The compressor for being directed to compression mechanical part 2 is also become with lubricating oil 6 with the discharge with scroll compressor 200 The substantially same pressure of pressure, for circle round scroll 13 back pressure source.Convolution scroll 13 will not separate or inclined touching as a result, Fixed scroll 12, and function is compressed as defined in playing consistently.In addition, a part of compressor lubricating oil 6 passes through supply Pressure and self weight, in the hope of escape receiving at mode be immersed in eccentric axial portion 4a and circle round scroll 13 fitting portion and axis 4 with Bearing portion 66 between base bearing component 11, falls after lubricating various pieces, and is back to store oil portion 20.
In addition, by configuring seal member 78 on the back side 13e of the end plate of convolution scroll 13, by seal member 78 Medial area is divided into high-pressure area 30, and the outside area of seal member 78 is divided into back pressure chamber 29.In such manner, it is possible to be kept completely separate high pressure The pressure in region 30 and the pressure of back pressure chamber 29, so the pressure for carrying out the back side 13e of autoconvolution scroll 13 can be controlled steadily Power load.
Then, using Figure 10 to the pressure of discharge chambe 15 formed by fixed scroll 12 and convolution scroll 13 rise into Row explanation.Have in the discharge chambe 15 formed by fixed scroll 12 and convolution scroll 13 and is formed in convolution scroll 13 The 1st discharge chambe 15a-1,15a-2 of scroll wrap outer wall side and the 2nd discharge chambe 15b-1, the 15b- for being formed in scroll wrap inner wall side 2.It (is recorded as the structure of the respective discharge chambe of outer wall side and inner wall side for being formed in scroll wrap " to be formed with pressure on twocouese The structure of contracting room ") gas of each discharge chambe 15 is inhaled into the circumnutation of convolution scroll 13, volume is reduced on one side It is mobile to center on one side.Moreover, reach discharge pressure in discharge chambe 15, and with tap 18 or by-pass prot 68a-1,68a-2, When 68b-1,68b-2 are connected to, the work refrigerant of discharge chambe 15 is pushed leaf valve 19 open and is discharged to discharge room 31.At this point, being equipped with The case where by-pass prot 68a-1,68a-2,68b-1,68b-2 (present embodiment) and the case where be not provided with (comparative example), illustrate each The comparison of pressure in a discharge chambe 15.
Figure 11 is to be not set to the first embodiment of the present invention (feelings equipped with by-pass prot 68a-1,68a-2,68b-1,68b-2 Condition) in the case where (comparative example), the figure of the comparison of the pressure for illustrating each discharge chambe 15.
As shown in figure 11, (the whether solid line in the case where being not provided with by-pass prot 68a-1,68a-2,68b-1,68b-2 The case where situation or dotted line), the pressure continuous voltage rise of discharge chambe 15, until discharge chambe 15 is connected to tap 18.Therefore, have It may excessively boost than the discharge pressure of room 31 is discharged, and discharge temperature is made to rise to necessity or more.
Therefore, in present embodiment, by-pass prot 68a-1,68a-2,68b-1,68b-2 are set to than tap 18 earlier The position being connected to (at the moment earlier) with discharge chambe 15 to phase.Thereby, it is possible to realize such as flowering structure, in the pressure of discharge chambe 15 While reaching discharge pressure, the discharge to discharge room 31 is started by by-pass prot 68a-1,68a-2,68b-1,68b-2, it can Discharge temperature caused by excessive boosting is inhibited to rise.
It and is other shapes of in addition, by making the circular intercommunicating pore of by-pass prot 68a-1,68a-2,68b-1,68b-2 Situation is compared, and the flow path resistance for the area of by-pass prot 68a-1,68a-2,68b-1,68b-2 can be constituted with least way Power.In addition, as shown in figure 11, the 1st discharge chambe 15a-1,15a-2 (solid line) and the 2nd discharge chambe 15b-1,15b-2 (dotted line) are respective The crank rotation angle for reaching discharge pressure is different.Therefore, in present embodiment, by-pass prot 68a-1,68a-2, which are set to, only to be pressed with the 1st Contracting room 15a-1,15a-2 connection appropriate position, by-pass prot 68b-1,68b-2 be set to only with the 2nd discharge chambe 15b-1,15b-2 The appropriate position of connection.Thereby, it is possible to inhibit in temperature caused by the overcompression of before spraying from tap 18, refrigerant It rises, so being able to suppress the disproportionated reaction of R1123.
Then, the variation of above-mentioned scroll compressor 200 is illustrated.
Figure 12 is the pressure of the compression mechanical part 2 of the scroll compressor 200 for the variation for indicating first embodiment of the present invention The plan view of the structure of contracting room 15.
Structure other than by-pass prot 68ab is same as structure illustrated in fig. 10, so in Figure 12, for identical as Figure 10 Constituent element use identical symbol, only illustrate relevant to by-pass prot 68ab explanation, and omit other explanations.
In scroll compressor 200 shown in Figure 12, by-pass prot 68ab is set to and is transported by the convolution of convolution scroll 13 The dynamic position being connected to the 1st discharge chambe 15a and the 2nd discharge chambe 15b both sides.In addition, simultaneously not to the 1st discharge chambe 15a and the 2nd The mode of discharge chambe 15b opening constitutes the diameter of by-pass prot 68ab smalllyer than the thickness for the scroll scroll wrap 13c that circles round.As a result, When crank rotation angle in figure, by-pass prot 68ab-1 is connected to the 2nd discharge chambe 15b-1, by-pass prot 68ab-3 and the 1st discharge chambe 15a-1 connection, plays the effect for preventing overcompression.In addition, by being set as this diameter, such as the by-pass prot 68ab-2, In of Figure 12 Circle round scroll scroll wrap 13c across when, by-pass prot 68ab is not connected to the 1st discharge chambe 15a-1 and the 2nd discharge chambe 15b-1. The work refrigerant between discharge chambe will not be caused to leak as a result, temperature rising is able to suppress, so being able to suppress the discrimination of R1123 Change reaction.
In the compressor of present embodiment, use polyalcohol ester oil as compressor lubricating oil.Polyalcohol of the invention Ester is not limited to specific type, but by using from neopentyl glycol, trimethylolpropane, pentaerythrite and dipentaerythritol That selects is at least one kind of as alcohol is constituted, and can widely adjust the viscosity of refrigerator oil.According to this structure, it is free to adjust The viscosity of whole refrigerator oil is able to suppress the generation of sliding heat so can ensure the oil film between blade and piston.In addition, The carbonyl of polyalcohol ester oil is captured as starting the free radical of the opportunity of disproportionated reaction, so the disproportionation for being able to suppress R1123 is anti- It answers.
In addition, the structural fatty acid of polyol ester of the invention is not limited to specific fatty acid, but it is preferable to use carbon originals The fatty acid of subnumber 6~12.Fatty acid is constituted either straight chain fatty acid, is also possible to branched chain fatty acid, but due to carbonyl It will not three-dimensionally be covered by alkyl, so the ability of straight chain fatty acid trapping free radical is higher.
In addition, being able to use extreme pressure compound, antioxidant, polymerization as the additive for making an addition to compressor lubricating oil 6 Inhibitor and reactant adsorbent etc..As extreme pressure compound, there is phosphoric acid ester, phosphorous acid esters and thiophosphoric acid salt etc., But it preferably is not easy to cause refrigerating circulatory device dysgenic phosphoric acid ester.
As phosphoric acid ester, specifically, can enumerate: tributyl phosphate, TNPP tri n pentyl phosphate, tri hexyl phosphate, tricresyl phosphate Heptyl ester, trioctyl phosphate, trinonyl phosphate, tridecyl phosphate, tricresyl phosphate (undecyl) ester, tricresyl phosphate (dodecyl) ester, Tricresyl phosphate (tridecyl) ester, tricresyl phosphate (myristyl) ester, tricresyl phosphate (pentadecyl) ester, tricresyl phosphate (cetyl) ester, Tricresyl phosphate (heptadecyl) ester, tricresyl phosphate (octadecyl) ester, tricresyl phosphate oleyl alcohol ester, triphenyl phosphate, tricresyl phosphate, phosphorus Sour three (dimethylbenzene) esters, cresyl diphenyl phosphate and phosphoric acid (xylyl) diphenyl ester etc..In general, phosphoric acid ester extreme pressure compound By into refrigerator oil add 0.1~3wt%, be effectively adsorbed in sliding part surface, on sliding surface make shearing force compared with Small film, thereby, it is possible to obtain abrasion to prevent effect.
According to this structure, sliding part surface is adsorbed in by extreme pressure compound to reduce friction, is able to suppress fever, energy Enough inhibit the selfdecomposition reaction of R1123 refrigerant.
In addition, as phenol antioxidant, specifically, being able to use: propylgallate, 2,4,5- trihydroxy butyryl Benzene, tert-butyl hydroquinone, nordihydroguaiaretic acid, butylated hydroxy anisole, 4- methylol -2,6- di-t-butyl phenol, Octyl gallate, butyl alkyl toluene and lauryl gallate etc..These antioxidants by base oil addition 0.1~ 1wt% can effectively capture free radical, and prevent from reacting.In addition, also can by base oil itself caused by antioxidant Color is suppressed to minimum limit.
According to this structure, phenol antioxidant effectively captures the free radical generated in closed container 1, as a result, can Access the effect for inhibiting the decomposition reaction of R1123.
In addition, in order to prevent as R1123, containing double bond and fluorine atom, molecule with high reactivity reaction, it can also 5% or so limonene is added with the refrigeration dose to R1123.The scroll compressor 200 of present embodiment and this is used The refrigerating circulatory device 100 of scroll compressor 200 is closed system, is enclosed Ru above-mentioned using lubricating oil as base oil.It is general and Speech, the lubricating oil viscosity of this base oil for being sealing into scroll compressor 200 is usually 32mm2/ s~68mm2/ s or so, separately On the one hand, the viscosity of limonene is to compare 0.8mm2/ s or so much lower viscosity.Therefore, lubricating oil viscosity is being mixed into 5% left side 60mm is sharply dropped in the case where right limonene2/ s, 48mm is sharply dropped in the case where being mixed into 15%2/ s is being mixed into 32mm is sharply dropped in the case where 35%2/s.Therefore, when the reaction of R1123 to be prevented is mixed into a large amount of limonenes, due to Lubricating oil viscosity reduces, and generates the generation of metallic soap caused by the metal of abrasion and sliding surface caused by insufficient lubrication contacts Deng influencing the reliability of scroll compressor 200 and refrigerating circulatory device 100.
In contrast, the lubricating oil of the scroll compressor 200 of present embodiment in order to supplement by be suitable for prevent from reacting Amount limonene mixing generate base oil viscosity reduce, by advance based on highly viscous lubricating oil or be mixed into The lubricating oil of the hyperviscosity of the same above amount of the combined amount of limonene, it is ensured that lubricating oil viscosity appropriate.
Specifically, if lubricating oil viscosity when selecting 5% limonene of mixing is 78mm2/ s, 35% lemon of mixing Lubricating oil viscosity when alkene is 230mm2The lubricating oil of/s or so can then ensure mixed viscosity 68mm2/s.In addition, being The effect for the reaction for preventing R1123 that limonene generates is set as maximum, it is also contemplated that increase to the combined amount of limonene The extreme example such as 70% or 80%.But in this case, the highly viscous lubricating oil viscosity for becoming basis respectively becomes 8500mm2/ s or 25000mm2/ s, more than the 3200mm of the maximum value as iso standard2/s.In addition, uniform with limonene It is also more difficult to mix, it is believed that practical application difficult.
In addition, with limonene mixed in equal amounts hyperviscosity lubricating oil, by mixing 800mm2/ s~ 1000mm2The lubricating oil of/s, can be obtained 32mm2/ s~68mm2The viscosity of/s.In addition, in the different limonene of mixing viscosity and surpassing In the case where heavy oil, if gradually addition hyperviscosity oil is mixed on a small quantity to limonene, it can be obtained relatively uniform Composition viscosity lubricating oil.
In addition, using limonene as example, but if being terpenes or class terpene, then can be obtained same in present embodiment Effect.For example, can be according to the geranyl two of the isoprene of half terpenes, prenol, 3 Methylbutanoic acid and monoterpenes Phosphoric acid, cineole, the farnesyl diphosphonic acid of firpene and sesquiterpene, qinghaosu, bisabol, two terpenes geranylgeranyl Base diphosphonic acid, retinol, retinene, phytol, taxol, forskolin, aphidicolin and triterpene alkenes squalene, Yi Jiyang Hair sterol etc., scroll compressor 200 and refrigerating circulatory device 100 use temperature and desired lubricating oil viscosity to carry out Selection.
In addition, be the concrete example having under the scroll compressor 200 of high-pressure bottle for exemplary viscosity, even if It is that 5mm can be used2/ s~32mm2/ s, lubricating oil compared with low viscosity, scroll compressor 200 with low pressure vessel, It can equally implement, and same effect can be obtained.
In addition, the terpenes and class terpene of limonene etc. have dissolubility for plastics, but if 30% or less mixing is left The right side, then it is influenced few, is not the level as problem to the electrical insulating property that the plastics in scroll compressor 200 require.But Be, have a case that the case where requiring long-term reliability and using temperature it is always high the problems such as in the case where, it is preferable to use Polyimides, polyimide amide or polyphenylene sulfide with chemical resistance.
In addition, in the winding of the motor part 3 of the scroll compressor 200 of present embodiment, by varnish (varnish) (Thermocurable insulating materials) is burnt via insulating coating coating to be invested on conductor.As Thermocurable insulating materials, can enumerate Polyimide resin, epoxy resin and unsaturated polyester resin etc..Wherein, polyimide resin is using the polyamic acid as precursor State coating, and attached with 300 DEG C or so burnings, thereby, it is possible to carry out polyimides.Known imidization reaction by amine with The reaction of carboxylic acid anhydrides and cause.Even if R1123 refrigerant it is interelectrode short circuit in, it is also possible to reacted, thus by On motor winding (so that aromatic diamine and aromatic tetracarboxylic dianhydride reaction and formed polyimide precursor based at Point) coating polyimide acid varnish, interelectrode short circuit can be prevented.
Therefore, even if being also able to maintain into winding in the state that the coil of motor part 3 is impregnated in liquid refrigerant Between the higher state of resistance, inhibit winding between electric discharge, as a result, it is possible to the selfdecomposition for the R1123 refrigerant that is inhibited is anti- The effect answered.
Figure 13 is the office for indicating the construction near the power supply terminal of the scroll compressor 200 of first embodiment of the present invention Portion's sectional view.
In Figure 13, indicate power supply terminal 71, glass insulation object 72, keep power supply terminal made of metal lid 73, with The flag-shaped terminal 74 and lead 75 that power supply terminal 71 connects.In the scroll compressor 200 of present embodiment, in vortex pressure Match to be connected on the power supply terminal 71 of the inside of the closed container 1 of contracting machine 200 and be close to the glass insulation object 72 as insulating element Baked donut shape insulating element 76.The insulating element 76 of baked donut shape preferably has insulating properties, and has patience to hydrofluoric acid. For example, ceramic system insulator and HNBR rubber system baked donut shape spacer etc. can be enumerated.The insulating element 76 of baked donut shape must It must be close to glass insulation object 72, but preferably also be close to connection terminal.
The power supply terminal 71 constituted in this way utilizes the insulating element 76 of baked donut shape, in the vortex of power supply terminal and lid The creepage distance of 200 inner surface of compressor is elongated, can prevent tracking terminal, and prevents the discharge energy of R1123 caused Fire.In addition, the hydrofluoric acid etching glass insulant 72 generated by the decomposition of R1123 can be prevented.
In addition, the scroll compressor 200 of present embodiment is also possible to open outlet into closed container 1, and The compressor for the so-called high pressure shell mould being full of in closed container 1 by the refrigerant compressed by discharge chambe 15.On the other hand, may be used To be to open suction inlet 17 into closed container 1, it is full of in closed container 1 by the refrigerant before being compressed by discharge chambe 15 The scroll compressor 200 of so-called low pressure shell mould.In this case, in closed container 1 heating and until import discharge chambe In the structure for being easy to generate temperature rising during in 15, low temperature caused by the low-temperature refrigerant in discharge chambe 15 imports is more aobvious It writes, in the disproportionated reaction for inhibiting R1123 preferably.
In addition, the scroll compressor 200 of high pressure shell mould can also be constituted as follows, make the system being discharged from outlet Cryogen passes through around motor part 3, after being heated in closed container 1 using motor part 3, from discharge pipe 50 to closed container It is discharged outside 1.According to this structure, it even if the temperature for the refrigerant being discharged from discharge pipe 50 is equal, also can reduce in discharge chambe 15 Refrigerant temperature, so inhibit R1123 disproportionated reaction on preferably.
(the 2nd embodiment)
Then, illustrate the 2nd embodiment of the invention.
Figure 14 is the figure for the structure for illustrating the refrigerating circulatory device 101 of second embodiment of the present invention.
In the refrigerating circulatory device 101 of present embodiment, using compressor 102, condenser 103, as the swollen of throttle mechanism The sequence of swollen valve 104 and evaporator 105 is connected using refrigerant piping 106, and constitutes refrigeration cycle.In refrigeration cycle Working fluid (refrigerant) is sealed in circuit.
Then, the structure of refrigerating circulatory device 101 is illustrated.
Fin-and-tube type heat can be used to hand in the case where surrounding medium is air as condenser 103 and evaporator 105 Parallel operation or simultaneously manifold (micro-pipe type) heat exchanger etc..
Condenser 103 when on the other hand, as the refrigerant that surrounding medium is salt water or dualistic formula refrigerating circulatory device With evaporator 105, double pipe heat exchanger, heat-exchangers of the plate type or shell and tube heat exchanger can be used.
As expansion valve 104, such as the electric expansion valve etc. of pulse motor driving method can be used.
In refrigerating circulatory device 101, it is provided on condenser 103 as with refrigerant will be situated between around heat exchange Matter (the 1st medium) drives the fluid machinery 107a of the 1st delivery section of (flowing) to the heat-exchange surface of condenser 103.In evaporator It is additionally provided on 105 as the surrounding medium (the 2nd medium) of heat exchange will be carried out with refrigerant to the heat-exchange surface of evaporator 105 Drive the fluid machinery 107b of the 2nd delivery section of (flowing).In addition, being equipped with the flow path 116 of surrounding medium in each surrounding medium.
Here, as surrounding medium, if water or ethohexadiol etc. can also be used sometimes using the air in atmosphere Salt water.In addition, refrigeration cycle can be used in the case where refrigerating circulatory device 101 is dualistic formula refrigerating circulatory device With the preferred refrigerant in operating temperature domain, such as hydrofluorocarbon (HFC), hydrocarbon (HC) or carbon dioxide.
Spiral shell can be used in the case where surrounding medium is air as fluid machinery 107a, 107b of driving surrounding medium The centrifugal blowers such as axial flow blowers, crossflow fan or the turbofans such as paddle fan are revolved, in the case where surrounding medium is salt water, can be made With centrifugal pump etc..In addition, in the case where refrigerating circulatory device 101 is dualistic formula refrigerating circulatory device, it is defeated as surrounding medium Fluid machinery 107a, the 107b sent, compressor 102 undertake the responsibility.
In condenser 103, the refrigerant inside it is being flowed through with two-phase (state of the gas and liquid mixing) portion flowed through Position (hereinafter, in this specification, referred to as " the two-phase pipe of condenser ") is provided with condensation temperature test section 110a, can measure refrigeration Agent temperature.
In addition, being provided with condensator outlet temperature detecting part between the outlet of condenser 103 and the entrance of expansion valve 104 110b.Condensator outlet temperature detecting part 110b is able to detect the degree of subcooling (entrance of expansion valve 104 of 104 entrance of expansion valve Temperature subtracts the value of the temperature of condenser 103).
In evaporator 105, position that the refrigerant inside it flows through with two-phase is being flowed through (hereinafter, in this specification, referred to as " the two-phase pipe of evaporator ") it is equipped with evaporating temperature test section 110c, the temperature of the refrigerant in evaporator 105 can be measured.
Inlet temperature is equipped in the sucting (between the outlet of evaporator 105 and the entrance of compressor 102) of compressor 102 Test section 110d.Thereby, it is possible to measure the temperature (inlet temperature) for being inhaled into the refrigerant of compressor 102.
As above-mentioned each temperature detecting part, for example, also using the outer of the piping or heat-transfer pipe flowed through by refrigerant sometimes The electronic thermostat that pipe is connected, sometimes also directly using the electronic type of the protecting pipe mode contacted with working fluid Thermostat.
The high-pressure side of detection refrigeration cycle is provided between the outlet of condenser 103 and the entrance of expansion valve 104 The high pressure side pressure of the pressure of (from the refrigerant of the entrance for exporting to expansion valve 104 of compressor 102 with region existing for high pressure) Power test section 115a.
In the low-pressure side that the outlet of expansion valve 104 is provided with detection refrigeration cycle (pressure is exported to from expansion valve 104 The refrigerant of the entrance of contracting machine 102 is with region existing for low pressure) pressure low-pressure lateral pressure test section 115b.
As high side pressure test section 115a, low-pressure lateral pressure test section 115b, such as can be used the displacement of diaphragm It is converted into the test section etc. of electric signal.In addition it is also possible to (measure the pressure difference of the entrance of expansion valve 104 using difference gauge Measuring mechanism), instead of high side pressure test section 115a and low-pressure lateral pressure test section 115b.
In addition, refrigerating circulatory device 101 is as all with each temperature detecting part, each pressure in the explanation of above structure The device of power test section is illustrated, but in aftermentioned control, can omit the test section without using detected value.
Then, the control method for carrying out refrigerating circulatory device 101 is illustrated.Firstly, control when to common operating It is illustrated.
In common operating, the temperature difference as inlet temperature test section 110d and evaporating temperature test section 110c is calculated Compressor 102 sucting in working fluid the degree of superheat.Moreover, control expansion valve 104 is so that the degree of superheat becomes Scheduled target superheat degree (for example, 5K).
In addition, the discharge unit in compressor 102 also sets up discharge temperature test section (not shown), it is able to use its detected value It is controlled.In this case, the compression of the temperature difference as discharge temperature test section and condensation temperature test section 110a is calculated The degree of superheat of working fluid in the discharge unit of machine 102.Moreover, control expansion valve 104 is so that the degree of superheat becomes scheduled Target superheat degree.
Control when then, to the special operating condition got higher a possibility that causing as disproportionated reaction is illustrated.
In present embodiment, in the case where the temperature detection value of condensation temperature test section 110a is excessive, expansion valve is opened 104, carry out the control for reducing the pressure, temperature of the high-pressure side working fluid in refrigerating circulatory device 101.
In general, being controlled in the refrigerant for eliminating carbon dioxide, so that it is more than critical for not becoming The super critical condition of point (point of Tcri is recorded as in aftermentioned Figure 15).This is because in the supercritical state, substance becomes Neither gas is also not the state of liquid, behavior is unstable and active.
Here, in present embodiment, in the temperature of the critical point (critical-temperature) for a benchmark, according to the temperature control The aperture of expansion valve 104 processed, so that condensation temperature is kept off within scheduled value (5K).In addition, containing R1123 in use Working fluid (mix refrigerant) in the case where, controlled using the critical-temperature of the mix refrigerant so that work The temperature of fluid does not become (- 5 DEG C of critical-temperature) or more.
Figure 15 is the Mollier line chart for illustrating the movement of the refrigerating circulatory device 101 in second embodiment of the present invention. Thermoisopleth 108 and saturation liquidus-saturated vapor line 109 are indicated in Figure 15.
In Figure 15, the refrigeration cycle under the excessive pressure condition for becoming disproportionated reaction Producing reason is with solid line (EP) it indicates, the refrigeration cycle under running well is indicated with dotted line (NP).
If the temperature value being set in the condensation temperature test section 110a of the two-phase pipe of condenser 103 is relative to being stored in advance Become within 5K (EP in Figure 15) in the critical-temperature of control device, then the aperture control of expansion valve 104 is by control device Open side.As a result, the on high-tension side condensing pressure of refrigerating circulatory device 101 reduces, so can as shown in the NP of Figure 15 Inhibit to rise the disproportionated reaction generated due to the excessive of refrigerant pressure, or even if also can in the case where generating disproportionated reaction Enough pressure is inhibited to rise.
In addition, above-mentioned control method is according to the condensation temperature measured by condensation temperature test section 110a, indirectly The method grasped the pressure in condenser 103 and control the aperture of expansion valve 104.This method is in the working fluid containing R1123 Azeotropic is azeotrope-like, does not have temperature difference (temperature ladder with the dew point and boiling point of the working fluid containing R1123 in condenser 103 Degree) or lesser situation under, condensation temperature is able to use as index to replace condensing pressure, so particularly preferably.
1 > of variation of < control method
In addition, as described above, the side for carrying out the aperture control of expansion valve 104 based on the pressure directly measured also can be used Method, to replace indirectly detecting the high pressure (condenser of refrigerating circulatory device 101 by comparing critical-temperature and condensation temperature Refrigerant pressure in 103) state and to the control method of the appropriate movement of the instructions such as expansion valve 104.
Figure 16 is the Mollier line chart for illustrating the control action of the variation 1 in second embodiment of the present invention.
In Figure 16, by from the discharge unit of compressor 102 to condenser 103, the entrance of expansion valve 104, and generate excessive The refrigeration cycle for the state that pressure rises is indicated with solid line (EP), indicates de- from above-mentioned excessive pressure state with dotted line (NP) From state refrigeration cycle.
In operating, in pressure (critical pressure) P for the critical point for being stored in advance in control devicecriIt subtracts by such as high pressure The pressure P for the outlet in condenser 103 that lateral pressure test section 115a is detectedcondPressure difference than scheduled value (such as Δ p =0.4MPa) it is small in the case where (EP in Figure 16), be determined as that the outlet from compressor 102 to the entrance of expansion valve 104, contains A possibility that having and generate disproportionated reaction in the working fluid of R1123, or generating, is higher, in order to avoid holding under the condition of high voltage It is continuous, side is opened into the aperture control of expansion valve 104.
As a result, the refrigeration cycle in Figure 16, which as shown in the NP in figure, is able to suppress, acts on high pressure (condensation pressure Power) side that reduces, and become disproportionated reaction Producing reason or the pressure that generates after disproportionated reaction rises.
This control method is preferred for the case where working fluid containing R1123 is non-azeotrope state, particularly condensation pressure The larger situation of temperature gradient under power.
2 > of variation of < control method
It is above-mentioned with critical-temperature or critical pressure to replace in addition it is also possible to using the control method based on degree of subcooling Control method on the basis of power.
Figure 17 is the control for indicating the variation 2 of control method of the refrigerating circulatory device 101 in second embodiment of the present invention Brake the Mollier line chart made.
In Figure 17, the refrigeration cycle under the excessive pressure condition as disproportionated reaction Producing reason is set as EP And it is indicated, the refrigeration cycle under running well is set as NP and is represented by dotted lines with solid line.
In general, in refrigerating circulatory device 101, pass through the appropriate of the refrigeration cycle of expansion valve 104 and compressor 102 etc. Control, heat exchanger size and refrigerant charge amount suitably change, the temperature of 103 inner refrigerant of condenser with temperature relative to The high a degree of mode of surrounding medium is set.In addition, degree of subcooling generallys use the value of 5K or so.Same refrigeration cycle dress Working fluid used in setting 101 containing R1123 also uses same measure.
Using in the refrigerating circulatory device 101 of measure as described above, if refrigerant pressure becomes excessively high, such as Figure 17 EP shown in like that, the tendency that the degree of subcooling in 104 entrance of expansion valve also rises.Therefore, in present embodiment, with expansion On the basis of the degree of subcooling of the refrigerant of 104 entrance of valve, the aperture of expansion valve 104 is controlled.
In addition, the degree of subcooling of the refrigerant of the entrance in expansion valve 104 when running well is seen in present embodiment Make 5K, on the basis of 3 times of the value of 15K, controls the aperture of expansion valve 104.The degree of subcooling for being set as threshold value, which is set as 3 times, is Because according to operating condition difference, degree of subcooling may change in the range.
Specifically, firstly, according to the detected value and condensator outlet temperature detecting part of condensation temperature test section 110a The detected value of 110b calculates degree of subcooling.Degree of subcooling is that the detected value of condensation temperature test section 110a has subtracted condensator outlet The value of the detected value of temperature detecting part 110b.Moreover, the degree of subcooling in the entrance of expansion valve 104 reaches scheduled value (15K) When, it is acted to the direction for the aperture for opening expansion valve 104, and control as the high-pressure section as refrigerating circulatory device 101 Reduction condensing pressure direction (from the solid line of Figure 17 to dotted line).
Condensing pressure, which is reduced, to be reduced with condensation temperature equally, so from condensation temperature Tcond1To Tcond2It reduces, in expansion valve The degree of subcooling of 104 entrances is from Tcond1-TexinTo Tcond2-TexinDegree of subcooling is reduced (here, the work of 104 entrance of expansion valve Fluid temperature (F.T.) will not change, and be set as Texin).As described above, as the condensing pressure in refrigerating circulatory device 101 reduces, supercooling But spending also reduces, so even if can also control cold in refrigerating circulatory device 101 on the basis of degree of subcooling Solidifying pressure.
Figure 18 is the piping for indicating to constitute a part of the piping of the refrigerating circulatory device 101 of second embodiment of the present invention The figure of connector 117.
In the conditioner (air-conditioning that refrigerating circulatory device 101 of the invention is used for for example home-use bypass type Device) in the case where, refrigerating circulatory device 101 is by the outdoor unit with outdoor heat exchanger and with indoor heat exchanger Indoor unit is constituted.Outdoor unit and indoor unit cannot can be integrated in its structure.Therefore, it is expanded using shown in Figure 18 Mechanical connector as connecting tube (ユ ニ オ Application Off レ ア) 111 connects outdoor unit and indoor unit in setting place It connects.
If the connection status of mechanical connector is poor due to clumsiness of operation etc., then refrigerant is from junction portion Leakage, causes adverse effect to equipment performance.In addition, the working fluid itself containing R1123 is the temperature with warm warming effect Room effect gas, so undesirable influence may also be caused on earth environment.It is let out it is therefore desirable to quickly detect and repair refrigerant Leakage.
Have in the detection method of refrigerant leakage to the position and apply detection agent, and whether to generate bubble and detected Method and method etc. using detection sensor, but the time of the operation of these methods is larger.
Therefore, in present embodiment, by winding the sealing element containing polymerization accelerant in expansion 111 periphery of connecting tube 112, it is easy refrigerant leak detection, and realize the reduction of leakage rate.
Specifically, being generated using when generating polymerization reaction as fluorocarbons tree in the working fluid containing R1123 The principle of the polytetrafluoroethylene (PTFE) of one of rouge.Specifically, constituting as follows, make working fluid and polymerization containing R1123 Promotor is intentionally contacted in leakage position, and in the leakage position, polytetrafluoroethylene (PTFE) is precipitated, solidifies.As a result, visually It is readily detected leakage, so the discovery and repairerment the time it takes until leakage can be shortened.
In addition, the generating unit of polytetrafluoroethylene (PTFE) is the leakage position of the working fluid containing R1123, so naturally Ground is preventing the position leaked from generating, is adhering to product of polymerization, so leakage rate can also be reduced.
(the 3rd embodiment)
Then, illustrate the 3rd embodiment of the invention.
Figure 19 is the figure for indicating the structure of refrigerating circulatory device 130 of third embodiment of the present invention.
The difference of the structure of refrigerating circulatory device 130 and the refrigerating circulatory device 101 of the 2nd embodiment shown in Figure 19 Point is, connect again with the entrance and exit of expansion valve 104, and be provided with the bypass pipe 113 with open and close valve.In addition, making It is for other discrepancys, with clear with relief valve 114 between the outlet of condenser 103 and the entrance of expansion valve 104 Wash line (purge line).The open side of relief valve 114 is configured at outdoor.In addition, in Figure 19, it is omitted and is illustrated using Figure 14 The record of each temperature detecting part, each pressure detecting portion etc..
The control method illustrated in carrying out the 2nd embodiment is (for example, the aperture of control expansion valve 104 is so that contain The critical-temperature of the working fluid of R1123 subtracts the value in the temperature working fluid of the two-phase pipe measurement of condenser 103 as 5K Control method, or be controlled such that working fluid critical pressure and by high side pressure test section 115a detect pressure The difference of power become 0.4MPa or more control method), open expansion valve 104 aperture in the case where, it is also possible under stress The situation for accelerating pressure decrease speed is not seen the case where improvement or generated in drop.
Therefore, in the case where producing situation as described above, opening for the bypass pipe 113 for being set to present embodiment is opened Valve closing makes refrigerant flow through bypass pipe 113, thereby, it is possible to rapidly reduce on high-tension side working fluid pressure, refrigeration is inhibited to follow The breakage of loop device 130.
Moreover, the aperture of expansion valve 104 to be set as to the control of big aperture and the control of the open and close valve set on bypass pipe 113 On the basis of, when emergent stopping compressor 102 can prevent the breakage of refrigerating circulatory device 130, in this aspect more preferably.This Outside, in the case where making 102 emergent stopping of compressor, the preferred fluid machine on rapidly reducing on high-tension side working fluid pressure Tool 107a, 107b will not stop.
The situation of the above correspondence is carried out it is also assumed that not inhibiting the phenomenon that disproportionated reaction, specifically, working fluid faces Boundary's temperature and by condensation temperature test section 110a detection condensation temperature difference be lower than 5K the case where or working fluid critical pressure Power and by high side pressure test section 115a detection pressure difference be lower than 0.4MPa the case where.In this case, refrigeration cycle Refrigerant pressure in device 130 is also possible to rise, so needing to become to outside drain the refrigerant of high pressure, prevents refrigeration from following The breakage of loop device 130.Therefore, it is opened the working fluid containing R1123 in refrigerating circulatory device 130 is empty to outside Between the control of relief valve 114 cleaned.
Here, setting position of the relief valve 114 in refrigerating circulatory device 130 is preferably high-pressure side.In addition, particularly preferably To the entrance of expansion valve 104, (in the position, working fluid is for the outlet setting of the condenser 103 indicated from present embodiment The supercooling liquid status of high pressure, so being easy to that the resulting water slug risen with the pressure sharply of disproportionated reaction is caused to be made With), or (in the position, working fluid is with high temperature and pressure from the setting of the discharge unit of compressor 102 to the entrance of condenser 103 Gaseous state exists, so molecular motion becomes active, be easy to generate disproportionated reaction itself).
Relief valve 114 is set to outdoor unit side.It, then can be with work if it is air-conditioning device in the case where the form Fluid is not constituted to the mode that the living space of indoor releases, then can be with working fluid not if it is cold-storage unit The mode released to the commodity display side of showcase etc. is constituted, so can say is not directly contribute influence to the mankind and commodity The form that mode considers.
In addition, preferably opening relief valve 114, and stop refrigerating circulatory device 130, for example make power supply in safety OFF。
(the 4th embodiment)
Then, the 4th embodiment of the invention is illustrated.
Figure 20 is the figure for indicating the structure of refrigerating circulatory device 140 of fourth embodiment of the present invention.
The discrepancy of the structure of refrigerating circulatory device 140 and the refrigerating circulatory device 101 of the 2nd embodiment shown in Figure 20 Be, be equipped with: detection is flowed into the 1st medium temperature test section 110e of the temperature of the 1st medium before condenser 103；And inspection Survey the 2nd medium temperature test section 110f of the temperature for the 2nd medium being flowed into before evaporator 105.In addition, each temperature detecting part With the detected value and compressor 102 of each pressure detecting portion and the input electric power of fluid machinery 107a, 107b with certain time The point being recorded in electronic recording equipment (not shown) is also different.
Figure 21 is to indicate the movement of the refrigerating circulatory device 140 of fourth embodiment of the present invention on Mollier line chart Figure.
In Figure 21, the condensing pressure when refrigeration cycle indicated using EP is generated as disproportionated reaction is followed with the refrigeration that NP is indicated Ring indicates refrigeration cycle when running well.In addition, circulation change (the example: NP's and EP in Figure 21, when rising to condensing pressure The difference etc. of evaporating pressure) it is briefly described, so not recording.
The condensation temperature of working fluid measure as the two-phase pipe in condenser 103, containing R1123 steeply rises The reason of, consider: (1) ambient temperature Tmcon、TmevaRising sharply, (2) compressor 102 power rise caused by Flowing variation (the power of any one of fluid machinery 107a, 107b of driving surrounding medium of boosting and (3) surrounding medium Rise).In addition, the phenomenon peculiar as the working fluid containing R1123 other than these main causes, can enumerate (4) disproportionation Boosting caused by reacting.Therefore, in present embodiment, in order to be determined as that the disproportionated reaction of (4) has occurred, to not generating (1)~(3) the phenomenon that, is differentiated and is controlled.
Therefore, in the control method of present embodiment, relative to (the 1)~temperature of (3) or the variable quantity of input electric power, In the biggish situation of the variable quantity of the condensation temperature of working fluid containing R1123, side is opened into the control of expansion valve 104.
Hereinafter, being illustrated to specific control method.Firstly, being not easy comparison temperature variable quantity and defeated under same datum Enter the variable quantity of power value, so being controlled such that input electric power does not change when measurement temperature variation.That is, measuring When temperature variation, the motor speed of compressor 102 and fluid machinery 107a, 107b keep certain.
For example, temperature variation is measured such as 10 seconds~1 minute and is measured with some time interval.Before the measurement, Such as before 10 seconds~1 minute or so controlled, by the input of compressor 102 and fluid machinery 107a, 107b Amount of power is kept into certain value.At this point, the input electric power amount of compressor 102 and fluid machinery 107a, 107b are per unit time Variable quantity it is essentially a zero.Here, " substantially " being set as zero is because compressing caused by the refrigerant deflection in compressor 102 The case where variation of the suction condition of machine 102 or the 1st medium in fluid machinery 107a, 107b and the 2nd medium are surrounding air Under, due to the influence of wind being blown into etc., input electric power generates a little change.Refer to that is, being somebody's turn to do " essentially a zero ", becomes comprising a little It is dynamic and smaller than scheduled specified value.
Under the conditions of above such, the condensation temperature determined by condensation temperature test section 110a per unit time Variable quantity than the 1st medium detected by the 1st medium temperature test section 110e temperature variable quantity per unit time and It is all big by either one or two of the 2nd medium temperature test section 110f variable quantity per unit time of temperature of the 2nd medium detected In the case where, it is believed that produce disproportionated reaction, by expansion valve 104 control for evolution to.
In addition, if the only aperture control of expansion valve 104, then coping with not can control in the pressure generated with disproportionated reaction The case where rising also can have in parallel bypass pipe 113 with expansion valve 104, or make to press as indicating in the 3rd embodiment 102 emergent stopping of contracting machine, or be further arranged to devices such as the external relief valves 114 released refrigerant and reduce pressure.
In addition, illustrating in present embodiment to be set to the variable quantity of the temperature detecting part of the two-phase pipe of condenser 103 On the basis of implement control expansion valve 104 control example, but can also be from the discharge unit of compressor 102 to expansion valve 104 Entrance, on the basis of the variable quantity of the pressure of any point, can also be with the variable quantity of the degree of subcooling of 104 entrance of expansion valve Benchmark.
In addition, when either present embodiment and the 2nd above-mentioned embodiment or the 3rd embodiment formula are applied in combination When, it can obtain further increasing for reliability, and it is preferred that.
(the 5th embodiment)
Then, illustrate the 5th embodiment of the invention.
Figure 22 is that the major part amplification of the compression mechanical part 2 of the scroll compressor 200 of fifth embodiment of the present invention is cut Face figure.
It is identical as the 1st embodiment other than being set to the presence or absence of the leaf valve 19 of tap 18, so to other knots Structure omits the description.
It is same as by-pass prot 68 in 1st embodiment, it is additionally provided with leaf valve 19 (check-valves) in tap 18, but this reality It applies in mode, leaf valve 19 can not also be set in tap 18.Therefore, discharge room 31 via tap 18 always with it is neighbouring Discharge chambe 15 is connected to, and room 31 and discharge chambe 15, which is discharged, becomes roughly equal pressure state.In addition, not existing in present embodiment Leaf valve 19 is arranged in tap 18, so being also not provided with valve guard 69.
The condition for being especially susceptible to generate disproportionated reaction is condition under excessive high temperature and pressure, so generating sometimes not is rule State under fixed operating condition, such as since the blocking of the refrigerant piping in refrigeration cycle, the air-supply of condenser stop Only, two-port valve or triple valve are forgotten to open etc., the state that discharge pressure (high-pressure side of refrigeration cycle) excessively rises, or Due to the torque deficiency etc. of the motor (motor part 3) of compressor, compression mechanism does not carry out the compression for making refrigerant boost The state of work.
Under these conditions, when continuing to supply electric power to scroll compressor 200, to composition scroll compressor 200 Motor glut electric current, electric motor overheating.As a result, the motor in scroll compressor 200 is relative to refrigerant It plays a role as heater, internal refrigerant pressure and temperature excessively rise.As a result, constitute motor stator around The insulator welding of group, the core wire (electric lead) of winding are in contact with each other, and cause the phenomenon of referred to as layer short circuit.Layer transcient short circuit time is to week It encloses refrigerant and propagates high-energy, so the starting point of disproportionated reaction can be become.
Therefore, in present embodiment, continue to supply to motor in the state for not carrying out boost action with compression mechanism In the case where electric power, inhibit the high-pressure side of refrigeration cycle, i.e. the pressure of the closed container 1 of storage motor rises, is set as By way of pressure avoids the occurrence condition of disproportionated reaction.Specifically, be set as discharge room 31 via tap 18 always with The structure that neighbouring discharge chambe 15 is connected to.
As noted above, according to the present embodiment, compressed action is not carried out in compression mechanism and supply electricity to motor In the case where power, motor is as the refrigerant inside heater heating closed container 1.But it such as even if is made due to heating Refrigerant pressure rises, and also can act on the pressure to discharge chambe 15 via tap 18, follow compression mechanism reverse rotation to refrigeration Pressure in the low-pressure side discharge closed container 1 of loop back path, so can be avoided the exception of the occurrence condition as disproportionated reaction Pressure rises.
As noted above, the 1st mode indicated in the 1st embodiment~the 5th embodiment of the invention, will contain 1,1, The refrigerant of 2- trifluoro-ethylene be used as working fluid, by polyalcohol ester oil be used as compressor lubricating oil, and have make vortex shape The fixed scroll that is erected from end plate of scroll wrap and the engagement of convolution scroll and the discharge chambe that is upwardly formed in both sides.Moreover, It is provided with the tap being open to discharge room in the end plate central position of fixed scroll, and will connect in discharge chambe and tap The by-pass prot of connection discharge chambe and discharge room is set to the end plate of fixed scroll before logical.Moreover, by-pass prot, which is equipped with, to be allowed from pressure The check-valves of the circulation of room side is laterally discharged in contracting room.
According to this structure, temperature caused by from the refrigerant before tap ejection, overcompression is able to suppress to rise, So being able to suppress the disproportionated reaction of R1123.In addition, the carbonyl of polyalcohol ester oil is captured as starting the opportunity of disproportionated reaction Free radical, so being able to suppress the disproportionated reaction of R1123.
In addition it is also possible to which multiple by-pass prots are arranged.The section that by-pass prot is connected to discharge chambe as a result, becomes wider, Each flow path resistance can simultaneously, which reduced, becomes the amount that the flow path area of effective by-pass prot adds up to, and can reliably be pressed down The effect that temperature caused by overcompression processed rises.
In addition, at least one in by-pass prot also can be set to circular intercommunicating pore.Thereby, it is possible to obtain making for bypass The flow path resistance of the area in hole is minimum, and further decreases the effect of the rising of temperature caused by overcompression.
In addition, at least one in by-pass prot, which can also be set to, is only being formed in the scroll wrap outer wall side of convolution scroll The position of any one of 1st discharge chambe or the 2nd discharge chambe of scroll wrap inner wall side for being formed in convolution scroll opening.
Each discharge chambe reaches discharge pressure as a result, opens the check-valves of by-pass prot, can be by optimal position is arranged Through-hole can obtain the rising of temperature caused by overcompression being suppressed to minimal effect.
In addition, at least one in by-pass prot is set in the 1st compression for being formed in the scroll wrap outer wall side of convolution scroll Room and be formed in convolution scroll scroll wrap inner wall side the 2nd discharge chambe both sides opening position, and by-pass prot can also be with In the shapes and sizes of the 1st and the 2nd discharge chambe opening when being different.
The 1st discharge chambe and the 2nd discharge chambe are connected to via by-pass prot as a result, can be prevented due to its pressure difference, work Refrigerant reflation, and cause to compress indoor temperature rising.
In addition, at least one in by-pass prot is also possible to for the diameter of by-pass prot to be set as D, and by end plate thickness direction When length is set as L, the structure for the range that D/L is 2.4~7.2.
Thereby, it is possible to provide make by by-pass prot work refrigerant the pressure loss and by-pass prot in working fluid again Expand the ratio optimization, high efficiency and the compressor for inhibiting the indoor temperature of compression to rise of the loss generated.
Then, for the 2nd mode on the basis of 1 mode, being also possible to check-valves is set on the end plate face of fixed scroll Leaf valve structure.
As a result, compared with the check-valves as the inside of by-pass prot setting spring etc., can be inhibited flow path resistance, And reduce the effect that temperature caused by overcompression rises.
In addition, the 3rd mode is on the basis of the 1st mode or 2 mode, working fluid is also possible to containing difluoromethane Hybrid working fluid, and difluoromethane is 30 weight % or more, 60 weight % or less.Alternatively, it is also possible to being containing tetrafluoroethane Hybrid working fluid, and tetrafluoroethane is 30 weight % or more, 60 weight % or less.Alternatively, it is also possible to be containing difluoromethane and The hybrid working fluid of tetrafluoroethane, and difluoromethane and tetrafluoroethane are mixed, mix difluoromethane and tetrafluoroethane mixed Composition and division in a proportion example is 30 weight % or more, 60 weight % or less.
Thereby, it is possible to inhibit the disproportionated reaction of R1123, and improve refrigerating capacity and COP.
4th mode, can also be with from neopentyl glycol, trihydroxy methyl third in the 1st~3 mode on the basis of either type That selects in alkane, pentaerythrite and dipentaerythritol at least plants as the alcohol for constituting the polyalcohol ester oil.
Thereby, it is possible to freely adjust the viscosity of refrigerator oil, so can ensure the oil film between blade and piston, energy Enough generations for inhibiting sliding heat.
For 5th mode in the 1st~3 mode on the basis of either type, polyalcohol ester oil can also be anti-containing phosphoric acid ester Abrasion agent.
Friction is reduced by being adsorbed in extreme pressure compound on sliding part surface as a result, is able to suppress fever, and inhibit The selfdecomposition of R1123 refrigerant is reacted.
For 6th mode in the 1st~the 3rd mode on the basis of either type, polyalcohol ester oil contains phenol antioxidant.
As a result, phenol antioxidant rapidly capture sliding part generate free radical, so can prevent free radical with Refrigerant R1123 reaction.
In the 1st~3 mode on the basis of either type, polyalcohol ester oil is also possible to 1% or more and low 7th mode The viscosity lubricating oil higher than base oil is mixed in 50% terpenes or class terpene, or is pre-mixed similar with terpenes or terpenoid The lubricating oil of hyperviscosity more than equivalent, and the lubrication mixed with the addition oil of base oil equivalent viscosities with base oil will be adjusted to Oil.
Thereby, it is possible to inhibit the disproportionated reaction of R1123.
8th mode also may include the electronic of driving convolution scroll on the basis of either type in the 1st~3 mode Machine portion, being thermally cured property of motor part insulating materials apply electric wire made of burning invests on conductor for line across insulating coating Circle.
Thermocurable insulating materials is applied by the winding to the motor coil in compressor as a result, even if by line Circle is impregnated in the state of liquid refrigerant, is also kept the resistance between winding with higher state, is inhibited electric discharge, as a result, energy Enough inhibit the decomposition of R1123 refrigerant.
9th mode is closed including storage discharge chambe and motor part in the 1st~3 mode on the basis of either type Container, closed container, which has, is set to the power supply terminal of oral area across insulating element and for power supply terminal to connect with lead Connection terminal.Moreover, the insulation division for the baked donut shape being close to insulating element is coupled on the power supply terminal on the inside of closed container Part.
The superinsulation object on the power supply terminal on the inside of metal shell as a result, so passing through the most short distance extended between conductor From being able to suppress the defective insulation of power supply terminal, kindling caused by the discharge energy of R1123 can be prevented.In addition, can prevent When R1123 is decomposed, the hydrogen fluoride that generates is contacted with glass insulation object, and prevents the corrosion of glass insulation object and damaged.
10th mode provides a kind of refrigerating circulatory device, by the compressor of either type in the 1st~9 mode, to being compressed The refrigerant gas that machine compresses and becomes high pressure carries out cooling condenser, carries out to the high-pressure refrigerant after being liquefied by condenser The evaporator of the throttle mechanism of decompression and the refrigerant vapor being throttled after mechanism decompression is constituted using piping connection.
Thereby, it is possible to inhibit the disproportionated reaction of R1123, and improve refrigerating capacity and COP.
11st mode is on the basis of 10 mode, it is possible to have set on the condensation temperature test section of condenser, control The aperture of throttle mechanism so that the difference of the critical-temperature of working fluid and the condensation temperature detected by condensation temperature test section at For 5K or more.
Thereby, it is possible to which the temperature working fluid measured by temperature detecting part is set as suitable with its pressure, throttling machine is controlled The aperture of structure, so that high-pressure side temperature working fluid (pressure) to be limited in the ampleness for considering safety according to critical pressure 5K or more.Thereby, it is possible to become excessively high the condensing pressure of high pressure further, so being able to suppress, there may be excessive The disproportionated reaction for the result (the close result of intermolecular distance) that pressure rises, it can be ensured that the reliability of device.
12nd mode is on the basis of 10 mode, it is possible to have set on the discharge unit of compressor and entering for throttle mechanism Mouthful between high side pressure test section, control the aperture of throttle mechanism so that the critical pressure of working fluid with by high pressure The difference of the pressure of lateral pressure test section detection becomes 0.4MPa or more.
Accordingly, for the working fluid containing R1123, especially the biggish non-azeotropic refrigerant of temperature gradient is being used In the case of, refrigerant pressure can be more accurately detected, its testing result is further used, carries out the aperture control of throttle mechanism System, and reduce the high side pressure in refrigerating circulatory device (condensing pressure).Therefore, it is able to suppress disproportionated reaction, and can be mentioned The reliability of high device.
13rd mode is on the basis of 10 mode, it is possible to have the condenser between condenser and throttle mechanism Outlet temperature test section controls the aperture of throttle mechanism so that the condensation temperature detected by condensation temperature test section with by cold The condensator outlet temperature difference of condenser outlet temperature test section detection becomes 15K or less.
Thereby, it is possible to use the degree of subcooling indicated with the difference of condensation temperature test section and condensator outlet temperature detecting part Testing result, carry out throttle mechanism aperture control, the excessive pressure of the working fluid in refrigerating circulatory device can be prevented Power rises.Therefore, it is able to suppress disproportionated reaction, and can be improved the reliability of device.
14th mode is on the basis of 10 mode, comprising: conveying is carried out the 1st of the 1st medium of heat exchange by condenser Delivery section；Conveying is carried out the 2nd delivery section of the 2nd medium of heat exchange by evaporator；Set on the condensation temperature test section of condenser； Detection is flowed into the 1st medium temperature test section of the temperature of the 1st medium before condenser；It is flowed into before evaporator with detection The 2nd medium temperature the 2nd medium temperature test section.Furthermore it is assumed that the variable quantity per unit time of the input of compressor, In the variable quantity per unit time of the input of the variable quantity per unit time and the 2nd delivery section of the input of 1st delivery section extremely Few one situation smaller than scheduled specified value.Moreover, in the per unit of the condensation temperature detected by condensation temperature test section Between variable quantity than the 1st medium detected by the 1st medium temperature test section temperature variable quantity per unit time and by the 2nd In the case that either one or two of variable quantity per unit time of temperature of the 2nd medium of medium temperature test section detection is all big, Can by throttle mechanism control evolution to.
As a result, when the pattern of surrounding medium does not change, in the case where condensation temperature generates variation sharply, it is believed that The rising of pressure caused by disproportionated reaction is produced, so can control the aperture of throttle mechanism in open direction.Therefore, energy Enough improve the reliability of device.
15th mode on the basis of either type, also can use containing the close of polymerization accelerant in the 10th~14 mode Seal the periphery of the connector of the piping of agent covering composition refrigeration cycle.
As a result, in the case where working fluid is leaked from connector, polymerization accelerant contained by sealant and contain R1123's Working fluid carries out polymerization reaction, generates product of polymerization.Therefore, leakage is visually easily confirmed, and the polymerization generates Object plays a role as the obstacle for the refrigerant stream released to outside, is able to suppress refrigerant leakage.
16th mode in the 1st~9 mode on the basis of either type, discharge room can also via tap always with pressure The connection of contracting room.
Even if compression mechanism is supplied electric power without compressed action and to motor as a result, motor adds as heater Refrigerant inside hot closed container, refrigerant pressure rise, also act on the pressure to discharge chambe via tap, make compressor Structure reverse rotation, the pressure into the low-pressure side of refrigeration cycle discharge closed container.Therefore, it can be avoided as disproportionated reaction Occurrence condition abnormal pressure rise.
(the 6th embodiment)
Then, illustrate the 6th embodiment of the invention.
Figure 23 is the system structure for having used the refrigerating circulatory device 1100 of compressor 161 of sixth embodiment of the present invention Figure.
As shown in figure 23, the refrigerating circulatory device 1100 of present embodiment is the case where being for example set as cooling supply dedicated circulation Under, mainly it is made of compressor 161, condenser 162, throttle mechanism 163 and evaporator 164.Moreover, these equipment utilizations are piped Connection, recycles working fluid (refrigerant).
In the refrigerating circulatory device 1100 constituted like that above, refrigerant becomes liquid by pressurization and at least one cooling Body, and by decompression and heating at least at least one become gas.Compressor 161 is by motor drive, by low-temp low-pressure Gas refrigerant pressurizes into the gas refrigerant of high temperature and pressure and conveys to condenser 162.In condenser 162, high temperature and pressure Gas refrigerant utilizes the cooling condensation of air by air-supplies such as fans, and becomes the liquid refrigerant of cryogenic high pressure.The liquid system Cryogen is depressurized using throttle mechanism 163, and a part becomes the gas refrigerant of low-temp low-pressure, and it is low that remainder becomes low temperature The liquid refrigerant of pressure, and it is delivered to evaporator 164.In evaporator 164, the liquid refrigerant of low-temp low-pressure is utilized by fan etc. The air of air-supply is heated and is evaporated, and is become the gas refrigerant of low-temp low-pressure, is again sucked into compressor 161 and is added Pressure.Repeat this circulation.
In addition, being illustrated as the dedicated refrigerating circulatory device 1100 of cooling supply, but also can certainly in above description Using four-way valve etc., work as heat supply circulation device.
In addition, constituting in condenser 162 and evaporator 164, the heat-transfer pipe of the refrigerant flow path of at least some heat exchanger The preferably aluminium refrigerant pipe containing aluminum or aluminum alloy.Especially in terms of reducing condensation temperature or making evaporating temperature rising On, it is however preferred to have the flat tube of multiple refrigerant passing holes.
Be sealing into the refrigerating circulatory device 1100 of present embodiment working fluid (refrigerant) be by (1) R1123 (1,1, 2- trifluoro-ethylene) and (2) R32 (difluoromethane) constitute bicomponent system hybrid working fluid, especially R32 be 30 weights Measure 60 weight % of % or more hybrid working fluid below.
In the application to aftermentioned scroll compressor 1200, by mixing 30 weight % or more in R1123 R32 is able to suppress the disproportionated reaction of R1123.The concentration of R32 is higher, can more further suppress disproportionated reaction.This is because The smaller bring of by R32, to fluorine atom polarization mitigates the effect of disproportionated reaction；With the physics due to R1123 and R32 Characteristic is similar so bring makes the work of the reaction chance reduction of disproportionation due to integrated behavior when the phase changes such as condensing, evaporate With being able to suppress the disproportionated reaction of R1123.
In addition, the mix refrigerant of R1123 and R32 is that 30 weight %, R1123 are 70 weight % and have altogether due to R32 Boiling point, there is no temperature downslides, similarly handle so being able to carry out with unitary system cryogen.In addition, when mixing 60 weight % with On R32 when, temperature downslide becomes larger, it may be difficult to progress similarly handled with unitary system cryogen, it is advantageous to mix 60 weights Measure % R32 below.Especially for preventing from being disproportionated, and temperature is further reduced close to azeotropic point and is glided, and makes equipment Design is easy, and preferably mixes R32 with 40 weight % or more, 50 weight % ratio below.
Figure 24 and Figure 25 be calculate in sixth embodiment of the present invention, the hybrid working fluid of R1123 and R32, R32 Displacement as pressure under 30 weight % or more, 60 weight % mixed proportion below, refrigeration cycle, temperature, compressor is held Refrigerating capacity and cycle efficieny (COP) when product is identical and the figure compared with R410A and R1123.
Firstly, the design conditions of explanatory diagram 24 and Figure 25.In recent years, in order to improve the cycle efficieny of equipment, heat exchanger High performance development, under actual operating condition, condensation temperature reduce, evaporating temperature be in rise tendency, discharge temperature Degree is also at the tendency of reduction.Accordingly, it is considered to arrive actual operating condition, the refrigeration design conditions of Figure 24 are set as and air conditioning Equipment for blowdown firing when (27 DEG C of indoor dry-bulb temperature, 19 DEG C of wet-bulb temperature, 35 DEG C of outdoor dry-bulb temperature) corresponding condition, steam Hair temperature is set as 15 DEG C, and condensation temperature is set as 45 DEG C, and the degree of superheat of the sucking refrigerant of compressor is set as 5 DEG C, condensator outlet Degree of subcooling be set as 8 DEG C.
In addition, when the heating design conditions of Figure 25 are the warming operations with the apparatus of air conditioning (20 DEG C of indoor dry-bulb temperature, 7 DEG C of outdoor dry-bulb temperature, 6 DEG C of wet-bulb temperature) corresponding design conditions, evaporating temperature is set as 2 DEG C, and condensation temperature is set as 38 DEG C, The degree of superheat of the sucking refrigerant of compressor is set as 2 DEG C, and the degree of subcooling of condensator outlet is set as 12 DEG C.
As shown in figures 24 and 25 it is found that being supplied by mixing R32 with 30 weight % or more, 60 weight % ratio below When cold and warming operation, compared with R410A, refrigerating capacity increase about 20%, cycle efficieny (COP) becomes 94~97%, the whole world The potentiality that warms can reduce to the 10~20% of R410A.
As described above, it in the bicomponent system of R1123 and R32, is comprehensively glided according to the preventing of disproportionation, temperature Size, for blowdown firing when warming operation when ability and COP (that is, being particularly adapted to use aftermentioned scroll compressor When the mixed proportion of 1200 apparatus of air conditioning), the preferably R32 containing 30 weight % or more, 60 weight % ratio below Mixture.The mixture of R32 more preferably containing 40 weight % or more, 50 weight % ratio below.
1 > of variation of < working fluid
In addition, the working fluid for being sealing into the refrigerating circulatory device 1100 of present embodiment can serve as reasons (1) R1123 (1, 1,2- trifluoro-ethylene) and (2) R125 (tetrafluoroethane) constitute bicomponent system hybrid working fluid, especially R125 be 30 60 weight % of weight % or more hybrid working fluid below.
In the application to aftermentioned scroll compressor 1200, by mixing the R125 of 30 weight % or more, it can press down The disproportionated reaction of R1123 processed.The concentration of R125 is higher, can more further suppress disproportionated reaction.This is because passing through R125 , effect that disproportionated reaction is mitigated to the smaller and bring of polarization of fluorine atom；With the physical characteristic phase due to R1123 and R125 It, can like so bring makes the effect of the reaction chance reduction of disproportionation due to integrated behavior when the phase changes such as condensation evaporation Inhibit the disproportionated reaction of R1123.In addition, R125 is noninflammability refrigerant, so R125 can reduce the flammability of R1123.
Figure 26 and Figure 27 be calculate in sixth embodiment of the present invention, the hybrid working fluid of R1123 and R125, R125 become under 30 weight % or more, the 60 weight % mixed proportion below, pressure of refrigeration cycle, temperature, compressor position Refrigerating capacity and cycle efficieny (COP) when shifting volume is identical and the figure compared with R410A and R1123.In addition, Figure 26 and Figure 27 Design conditions it is same as the design conditions of Figure 24 and Figure 25 respectively.
As shown in Figure 26 and Figure 27 it is found that by mixing R125 with 30 weight % or more, 60 weight % ratio below, with R410A is compared, and refrigerating capacity becomes 96~110%, and cycle efficieny (COP) becomes 94~97%.
Especially by mixing 40 weight % or more, 50 weight % R125 below, the disproportionation of R1123 can be prevented, and Discharge temperature is reduced, so becoming easy when the high loaded process of discharge temperature rising with the design of equipment when freezing and refrigeration. Moreover, global warming potential can be reduced to the 50~100% of R410A.
As described above, in the bicomponent system of R1123 and R125, comprehensively according to the preventing of disproportionation, flammability Reduction, for blowdown firing when warming operation when ability, COP and discharge temperature (that is, being particularly adapted to use aftermentioned vortex When the mixed proportion of the apparatus of air conditioning of formula compressor 1200), it is preferably below containing 30 weight % or more, 60 weight % The mixture of R125, the more preferably mixture containing 40 weight % or more, 50 weight % R125 below.
2 > of variation of < working fluid
In addition, the working fluid for being sealing into the refrigerating circulatory device of present embodiment be also possible to by (1) R1123 (1,1, 2- trifluoro-ethylene), the hybrid working stream of three compositions system that constitutes of (2) R32 (difluoromethane) and (3) R125 (tetrafluoroethane) Body.The mixed proportion for being especially also possible to mix R32 and R125 is 30 mixing ratio more than or lower than 60 weight % and R1123 Example is hybrid working fluid of the 40 weight % more than or lower than 70 weight %.
In the application to aftermentioned scroll compressor 1200, by the way that the mixed proportion for mixing R32 and R125 is set as 30 weight % or more, are able to suppress the disproportionated reaction of R1123.In addition, the mixed proportion of mixing R32 and R125 is higher, more can Further suppress disproportionated reaction.In addition, R125 can reduce the flammability of R1123.
Figure 28 and Figure 29 be calculate it is in sixth embodiment of the present invention, the mixed proportion of R32 and R125 is fixed to 50 weight % and when being mixed with R1123, the pressure of refrigeration cycle, temperature, the displacement volume of compressor it is identical when refrigeration energy Power and cycle efficieny (COP), and the figure compared with R410A and R1123.In addition, the design conditions of Figure 28 and Figure 29 respectively with figure The design conditions of 24 and Figure 25 are same.
As shown in Figure 28 and Figure 29 it is found that by the way that the mixed proportion for mixing R32 and R125 is set as 30 weight % or more 60 Weight % is hereinafter, compared with R410A, and refrigerating capacity becomes 107~116%, and cycle efficieny (COP) becomes 93~96%.
40 weight % or more, 50 weight % is set as hereinafter, can especially by by the mixed proportion for mixing R32 and R125 It prevents from being disproportionated, and reduces discharge temperature, also can reduce flammability.Moreover, R410A can be reduced to global warming potential 60~30%.
In addition, in 2 > of variation of < working fluid, by the mixing of the R32 of the working fluid of three compositions system and R125 Ratio is set to 50 weight % and is illustrated, but the mixed proportion of R32 can also be set as to 0 weight % or more and 100 weights % is measured hereinafter, in the case where increasing refrigerating capacity, the mixed proportion of R32 can also be increased.On the contrary, when reducing the mixed of R32 Composition and division in a proportion example, and when the mixed proportion of increase R125, it can reduce discharge temperature, and reduce flammability.
As described above, in the three compositions system of R1123, R32 and R125, comprehensively according to the preventing of disproportionation, fire Burn property reduction, for blowdown firing when warming operation when ability, COP and discharge temperature (that is, being particularly adapted to use aftermentioned When the mixed proportion of the apparatus of air conditioning of scroll compressor 1200), preferably mixing R32 and R125 and by R32 and R125 Sum be set as 30 weight % or more, 60 weight % mixture below.More preferably contain 40 weight % or more, 50 weight % or less R32 and R125 sum mixture.
Then, the structure of the scroll compressor 1200 of an example of the compressor 161 as present embodiment is said It is bright.
Figure 30 is the longitudinal section of the scroll compressor 1200 of sixth embodiment of the present invention, and Figure 31 is the vortex pressure The major part amplification sectional view of the compression mechanical part 202 of contracting machine 1200.Hereinafter, illustrating its knot to scroll compressor 1200 Structure, movement and effect.
As shown in figure 30, the scroll compressor 1200 of sixth embodiment of the present invention has closed container 201 and closed appearance Compression mechanical part 202, motor part 203 and store oil portion 120 inside device 201.
Illustrate the details of compression mechanical part 202 using Figure 31.Compression mechanical part 202 has welding or hot jacket etc. and is fixed on The base bearing component 211 with axis 204 in closed container 201.Moreover, by being fixed at the base bearing component 211 The convolution scroll 213 engaged with fixed scroll 212 is sandwiched between fixed scroll 212 and base bearing component 211, constitutes whirlpool Rotating compression mechanical part 202.Fixed scroll 212 and convolution scroll 213 are respectively provided with the scroll wrap of vortex shape from end plate Erect the construction of (protrusion).
It is equipped with the rotation for preventing convolution scroll 213 between convolution scroll 213 and base bearing component 211 and is drawn Lead the rotations limiting mechanisms 214 such as the cross slip-ring for making it carry out circular orbit movement.Utilize the eccentric axial portion of the upper end in axis 204 204a makes the progress eccentric drive of scroll 213 of circling round, and thereby, it is possible to make the progress circular orbit movement of scroll 213 of circling round.
Be formed in as a result, fixed scroll 212 and circle round scroll 213 between discharge chambe 215, make work refrigerant from The lateral central portion in periphery is with reducing volume mobile, thus via the suction line 216 and fixed scroll passed to outside closed container 201 The suction inlet 217 of 212 peripheral part sucks working fluid, and is closed in after discharge chambe 215, is compressed.Reach rule The working fluid of constant-pressure pushes leaf valve 219 open from the tap 218 of the central portion of fixed scroll 212, and to discharge room 122 Discharge.
Discharge room 122 is the muffler by being set to the end plate face of fixed scroll 212 in a manner of covering tap 218 124 spaces formed.The work refrigerant of discharge room 122 is expelled to via the access for being set to compression mechanical part 202, to closed Discharge in container 201.The work refrigerant in closed container 201 is expelled to via discharge pipe 123, from closed container 201 to system SAPMAC method device 1100 is discharged.
In addition, the excessive deformation bring in order to avoid leaf valve 219 is damaged, the valve guard 121 equipped with limitation lift amount. In addition, leaf valve 219 is set on the end plate face in the forming position of the tap 218 of such as end plate of fixed scroll 212.
Figure 32 is to indicate in sixth embodiment of the present invention, convolution scroll 212 is engaged to fixed scroll 213 The figure of state.It is to indicate that the 1st discharge chambe is sealed with the figure of the state of working fluid on the left of Figure 32, is to indicate on the right side of Figure 32 2 discharge chambes are sealed with the figure of the state of working fluid.
As shown in figure 32, have in the discharge chambe 215 formed by fixed scroll 212 and convolution scroll 213 and formed In the scroll wrap outer wall side of convolution scroll 213 the 1st discharge chambe 215a and be formed in the 2nd discharge chambe of scroll wrap inner wall side 215b.The sucking volume of the 2nd discharge chambe 215b of sucking volumetric ratio of 1st discharge chambe 215a is big.That is, at the time of closing into working fluid Difference, so the pressure of the 1st pairs of discharge chambe 215a and the pressure of the 2nd discharge chambe 215b are also different.
Figure 33 is in the pressure for indicate in sixth embodiment of the present invention, the 1st discharge chambe 215a and the 2nd discharge chambe 215b Rise the figure of curve.
Initially, different at the time of closing in the 1st discharge chambe 215a and the 2nd discharge chambe 215b, so the beginning of pressure curve Point is inconsistent.But it here, is illustrated to keep difference clear using chart consistent at the time of making to close.Such as Figure 33 institute Show it is found that the pressure change rate for sucking the lesser 2nd discharge chambe 215b of volume is bigger than the pressure change rate of the 1st discharge chambe 215a. That is, the pressure differential Δ Pb of the 2nd discharge chambe 215b-0 of the 2nd discharge chambe 215b-1 and next formation that are formed at upper one compare phase With the 1st discharge chambe 215a pressure differential Δ Pa it is big, about the 2nd discharge chambe 215b, via the contact portion in the diameter direction of scroll wrap, Working fluid easily leaks out.
Figure 30 is returned, is equipped with pump 125, the side for pumping 125 suction inlet to be present in store oil portion 120 in one end of axis 204 Formula configuration.Pump 125 drives simultaneously with scroll compressor 1200, so regardless of pressure condition and running speed, it can be reliable Ground sucts the compressor in the store oil portion 120 being arranged in the bottom in closed container 201 with lubricating oil 206 (oil, refrigerator oil), Also eliminate the worry of shortage of oil.
The compressor sucted by the pump 125 is with lubricating oil 206 by penetrating through the oily supply hole in axis 204 according to longitudinal direction 126 supply (referring to Figure 31) to compression mechanical part 202.In addition, the compressor lubricating oil 206 is by sucting it by pump 125 It is preceding or after sucting, remove foreign matter using oil filter etc., foreign matter can be prevented to be mixed into compression mechanical part 202, can be realized into One step improves reliability.
The compressor for being directed to compression mechanical part 202 is also become with lubricating oil 206 to be had and scroll compressor 1200 The substantially same pressure of discharge pressure, back pressure source for scroll 213 of circling round.Convolution scroll 213 will not be remote as a result, From or touching fixed scroll 212 partially, and function is compressed as defined in playing consistently.In addition, one of compressor lubricating oil 206 Divide through supply pressure and self weight, is immersed in eccentric axial portion 204a and scroll 213 of circling round in the hope of escaping the mode at receiving Bearing portion 166 between fitting portion and axis 204 and base bearing component 211, falls, and be back to after lubricating various pieces Store oil portion 120.
In addition, the position closed into working fluid about the 1st discharge chambe 215a and the 2nd discharge chambe 215b, general right Claim in scroll, is such as indicated by the dotted line of Figure 32 (the fixed scroll winding of symmetrical wing terminates curve), fixed scroll 212 To be emitted into outside, the mode for not forming contact with convolution scroll 213 is formed in the winding end portion of spiral.In this case, T point (when asymmetric use position) of the detent position of 1st discharge chambe 215a as the left side of Figure 32, working fluid reach T It is heated in the path of point, the stability of the existing refrigerant of stability ratio R410A of R1123 etc. is low, it is possible that generating Polymerization reaction and the disproportionated reaction discharged with biggish heat.
Therefore, in present embodiment, with the position of the 1st discharge chambe 215a and the 2nd discharge chambe 215b closed into working fluid The mode for deviateing substantially 180 degree constitutes spiral scroll wrap.Specifically, nibbling fixed scroll 212 and convolution scroll 213 In the state of conjunction, extend to the spiral scroll wrap of fixed scroll 212 equal with the convolution spiral scroll wrap of scroll 213. In this case, the S point that the 1st discharge chambe 215a closes the left side for becoming Figure 32 into the position of working fluid (closes position when symmetrical Set), after closing the 1st discharge chambe 215a, after the rotation of axis 204 carries out 180 degree or so, close the 2nd discharge chambe 215b.Phase as a result, For the 1st discharge chambe 215a, the influence that refrigerant temperature caused by sucking can be made to heat rises is minimum, and then can ensure most Big sucking volume.That is, wrap height can lower be set, as a result, it is possible to reduce the diameter direction contact portion of scroll wrap Leakage-gap (=leak cross-section area), so leakage loss can be further decreased.
In addition, as shown in figure 31, forming high-pressure area 230 in the back side 213e of convolution scroll 213 and being set to high pressure With the back pressure chamber 129 of the intermediate pressure of low pressure, and multiple fuel supply paths are set, part of it or all via back pressure chamber 129 Mode is constituted.Additional by the pressure from back side 213e, convolution scroll 213 steadily presses on fixed scroll 212, energy Enough leakages reduced from back pressure chamber 129 to discharge chambe 215, and carry out stable operating.
In addition, the fuel feeding of necessary amount can be carried out to necessary position by the way that fuel supply path is set as multiple.For example, In In suction stroke before closed compression room 215, the Seal Oil of some degree is needed, but when a large amount of oil of supply, causes work Make the sucking overheat of fluid, and volume efficiency is caused to reduce.In addition, it is also the same in compression midway, when large supply oil, by Input is caused to increase in viscosity loss.Therefore, desirability is the oil that necessary amount is supplied to each position, in order to realize the situation, Form multiple fuel supply paths.In addition, by via back pressure chamber 129, the pressure difference of discharge chambe 215 that can reduce and supply.Example Such as, and for suction stroke or compression midway, oil is directly fed from high-pressure area 230 and is compared, from the back pressure for being set to intermediate pressure Room 129 becomes smaller for the pressure difference of one side of oil supply, so being able to carry out the minimum fuel feeding of necessary minimum.In such manner, it is possible to prevent The fuel feeding of amount is able to suppress and sucks input increase etc. caused by heating caused reduced performance and viscosity loss.
In addition, by configuring seal member 178 on the back side 213e of convolution scroll 213, it will be in seal member 178 Lateral areas is divided into high-pressure area 230, and the outside area of seal member 178 is divided into back pressure chamber 129.In addition, extremely by fuel supply path Few 1 path is using the back pressure chamber fuel supply path 151 from high-pressure area 230 to back pressure chamber 129 and from back pressure chamber 129 to the 2nd pressure The discharge chambe fuel supply path 152 of contracting room 215b is constituted.In this way, high-pressure area can be kept completely separate by using seal member 178 230 and back pressure chamber 129 pressure, so the pressure load for carrying out the back side 213e of autoconvolution scroll 213 can be controlled steadily.
In addition, can be limited to rotation by the way that the back pressure chamber fuel supply path 151 from high-pressure area 230 to back pressure chamber 129 is arranged The sliding part and fixed scroll 212 of mechanism 214 processed and the thrust sliding part of convolution scroll 213 supply compressor lubricating oil 206.In addition, can energetically be increased by being arranged from back pressure chamber 129 to the discharge chambe fuel supply path 152 of the 2nd discharge chambe 215b To the fuel delivery of the 2nd discharge chambe 215b, the leakage loss being able to suppress in the 2nd discharge chambe 215b.
In addition, an open end 151b of back pressure chamber fuel supply path 151 is formed in the back side 213e of convolution scroll 213, Open end 151b is set to commute the inside and outside of seal member 178, another open end 151a is always open in high-pressure area 230.As a result, It can be realized interrupted oil supply.
Figure 34 is that the scroll 213 that indicates to make in sixth embodiment of the present invention to circle round is engaged with fixed scroll 212, and from The figure of the state of the overleaf observing for scroll 213 of circling round.In addition, 4 attached drawings of Figure 34 are the figures for making the every 90 degree of deviations of phase.
As shown in figure 34, using seal member 178, the rear surface regions for scroll 213 of circling round separate into the higher-pressure region of inside The back pressure chamber 129 in domain 230 and outside.In the state of (II), outside, that is, back pressure chamber of the open end 151b in seal member 178 129 openings, so being supplied to oil.In contrast, in the state of (I), (III), (IV), open end 151b is in seal member 178 inside opening, so oil will not be supplied to.
That is, the open end 151b of a side of back pressure chamber fuel supply path 151 commutes high-pressure area 230 and back pressure chamber 129, but Only when two open end 151a, 151b of back pressure chamber fuel supply path 151 generate pressure difference, compressor is supplied to back pressure chamber 129 and is used Lubricating oil 206.By being set as this structure, fuel delivery can commute (leap) ratio of seal member 178 according to open end 151b Example is adjusted, so can be to be constituted the path of back pressure chamber fuel supply path 151 relative to 10 times of oil filter or more of size.
As a result, foreign matter can not engaging-in access and occlude.Therefore, while applying stable back pressure, thrust sliding part Good state is also able to maintain that with the lubrication of rotation limiting mechanism 214, is capable of providing high efficiency and realizes the whirlpool of high reliability Rotary compressor 1200.In addition, being always at high-pressure area 230, and open end 151b in present embodiment with open end 151a Son is illustrated in case where commuting high-pressure area 230 and back pressure chamber 129.But even if in open end 151a dealing In high-pressure area 230 and back pressure chamber 129, and open end 151b is always in that case of back pressure chamber 129, in open end Pressure difference is generated between 151a, 151b, so can be realized interrupted oil supply, can obtain same effect.
In the case where carrying out the pressure of back side 213e of autoconvolution scroll 213 and adding insufficient, convolution whirlpool may cause The tilt phenomenon that rotating part 213 is detached from from fixed scroll 212.In an inclined state, from back pressure chamber 129 to the discharge chambe before closing 215 leakage working fluids, so volume efficiency deteriorates.In order not to generate the situation, back pressure chamber 129 is needed to maintain defined pressure Power.Therefore, discharge chambe oil passage is constituted in a manner of closing the 2nd discharge chambe 215b after working fluid and be connected to back pressure chamber 129 Diameter 152.The pressure of back pressure chamber 129 becomes the defined pressure higher than suction pressure as a result, so tilt phenomenon can be prevented, It can be realized high efficiency.In addition, the pressure of the 2nd discharge chambe 215b can also be guided to back pressure chamber 129 even if generating inclination, So being able to carry out the early recovery to normal operation.
In present embodiment, make the sucking for being formed in the 1st discharge chambe 215a of the scroll wrap outer wall side of convolution scroll 213 The sucking volume that volumetric ratio is formed in the 2nd discharge chambe 215b of the scroll wrap inner wall side of convolution scroll 213 is big.Thereby, it is possible to Shorten and constituted until the path of the detent position of the 1st discharge chambe 215a, is able to suppress and heats refrigerant before compression starts, institute To be able to suppress the disproportionated reaction of R1123.
In addition, using polyalcohol ester oil as compressor lubricating oil (refrigerator oil) in the compressor of present embodiment. Polyol ester of the invention is not limited to specific type, but by using from neopentyl glycol, trimethylolpropane, pentaerythrite It is at least one kind of as alcohol is constituted with being selected in dipentaerythritol, it can widely adjust the viscosity of refrigerator oil.According to the knot Structure, the viscosity for being free to adjustment refrigerator oil are able to suppress sliding so can ensure the oil film between blade and piston The generation of heat.In addition, the carbonyl of polyalcohol ester oil is captured as starting the free radical of the opportunity of disproportionated reaction, so being able to suppress The disproportionated reaction of R1123.
In addition, the structural fatty acid of polyol ester of the invention is not limited to specific fatty acid, but it is preferable to use carbon originals The fatty acid of subnumber 6~12.Fatty acid is constituted either straight chain fatty acid, is also possible to branched chain fatty acid, but due to carbonyl It will not three-dimensionally be covered by alkyl, so the ability of straight chain fatty acid trapping free radical is higher.
In addition, being able to use extreme pressure compound as the additive for making an addition to compressor lubricating oil 206, antioxidant, gathering Close inhibitor and reactant adsorbent etc..As extreme pressure compound, there is phosphoric acid ester, phosphorous acid esters and thiophosphoric acid salt Deng, but preferably be not easy to cause refrigerating circulatory device dysgenic phosphoric acid ester.
As phosphoric acid ester, specifically, can enumerate: tributyl phosphate, TNPP tri n pentyl phosphate, tri hexyl phosphate, tricresyl phosphate Heptyl ester, trioctyl phosphate, trinonyl phosphate, tridecyl phosphate, tricresyl phosphate (undecyl) ester, tricresyl phosphate (dodecyl) ester, Tricresyl phosphate (tridecyl) ester, tricresyl phosphate (myristyl) ester, tricresyl phosphate (pentadecyl) ester, tricresyl phosphate (cetyl) ester, Tricresyl phosphate (heptadecyl) ester, tricresyl phosphate (octadecyl) ester, tricresyl phosphate oleyl alcohol ester, triphenyl phosphate, tricresyl phosphate, phosphorus Sour three (dimethylbenzene) esters, cresyl diphenyl phosphate and phosphoric acid (xylyl) diphenyl ester etc..In general, phosphoric acid ester extreme pressure compound By into refrigerator oil add 0.1~3wt%, be effectively adsorbed in sliding part surface, on sliding surface make shearing force compared with Small film, thereby, it is possible to obtain abrasion to prevent effect.
According to this structure, sliding part surface is adsorbed in by extreme pressure compound to reduce friction, is able to suppress fever, energy Enough inhibit the selfdecomposition reaction of R1123 refrigerant.
In addition, as phenol antioxidant, specifically, being able to use: propylgallate, 2,4,5- trihydroxy butyryl Benzene, tert-butyl hydroquinone, nordihydroguaiaretic acid, butylated hydroxy anisole, 4- methylol -2,6- di-t-butyl phenol, Octyl gallate, butyl alkyl toluene and lauryl gallate etc..These antioxidants by base oil addition 0.1~ 1wt% can effectively capture free radical, and prevent from reacting.In addition, also can by base oil itself caused by antioxidant Color is suppressed to minimum limit.
According to this structure, phenol antioxidant effectively captures the free radical generated in closed container 201, as a result, Can be inhibited R1123 decomposition reaction effect.
In addition, in order to prevent as R1123, containing double bond and fluorine atom, molecule with high reactivity reaction, it can also 5% or so limonene is added with the refrigeration dose to R1123.It the scroll compressor 1200 of present embodiment and uses The refrigerating circulatory device 1100 of the scroll compressor 200 is closed system, is enclosed Ru above-mentioned using lubricating oil as base oil.Generally For, the lubricating oil viscosity of this base oil for being sealing into scroll compressor 1200 is usually 32mm2/ s~68mm2/ s or so, On the other hand, the viscosity of limonene is to compare 0.8mm2/ s or so much lower viscosity.Therefore, lubricating oil viscosity is being mixed into 5% 60mm is sharply dropped in the case where the limonene of left and right2/ s, 48mm is sharply dropped in the case where being mixed into 15%2/ s, mixed 32mm is sharply dropped in the case where entering 35%2/s.Therefore, when the reaction of R1123 to be prevented is mixed into a large amount of limonenes, by It is reduced in lubricating oil viscosity, generates the life of metallic soap caused by the metal of abrasion and sliding surface caused by insufficient lubrication contacts At etc., influence the reliability of scroll compressor 1200 and refrigerating circulatory device 1100.
In contrast, the lubricating oil of the scroll compressor 1200 of present embodiment in order to supplement by be suitable for prevent from reacting Amount limonene mixing generate base oil viscosity reduce, by advance based on highly viscous lubricating oil or be mixed into The lubricating oil of the hyperviscosity of the same above amount of the combined amount of limonene, it is ensured that lubricating oil viscosity appropriate.
Specifically, if lubricating oil viscosity when selecting 5% limonene of mixing is 78mm2/ s, 35% lemon of mixing Lubricating oil viscosity when alkene is 230mm2The lubricating oil of/s or so can then ensure mixed viscosity 68mm2/s.In addition, being The effect for the reaction for preventing R1123 that limonene generates is set as maximum, it is also contemplated that increase to the combined amount of limonene The extreme example such as 70% or 80%.But in this case, the highly viscous lubricating oil viscosity for becoming basis respectively becomes 8500mm2/ s or 25000mm2/ s, more than the 3200mm of the maximum value as iso standard2/s.In addition, uniform with limonene It is also more difficult to mix, it is believed that practical application difficult.
In addition, with limonene mixed in equal amounts hyperviscosity lubricating oil, by mixing 800mm2/ s~ 1000mm2The lubricating oil of/s, can be obtained 32mm2/ s~68mm2The viscosity of/s.In addition, in the different limonene of mixing viscosity and surpassing In the case where heavy oil, if gradually addition hyperviscosity oil is mixed on a small quantity to limonene, it can be obtained relatively uniform Composition viscosity lubricating oil.
In addition, using limonene as example, but if being terpenes or class terpene, then can be obtained same in present embodiment Effect.For example, can be according to the geranyl two of the isoprene of half terpenes, prenol, 3 Methylbutanoic acid and monoterpenes Phosphoric acid, cineole, the farnesyl diphosphonic acid of firpene and sesquiterpene, qinghaosu, bisabol, two terpenes geranylgeranyl Base diphosphonic acid, retinol, retinene, phytol, taxol, forskolin, aphidicolin and triterpene alkenes squalene, Yi Jiyang Hair sterol etc., scroll compressor 1200 and refrigerating circulatory device 1100 using temperature and desired lubricating oil viscosity into Row selection.
In addition, be the concrete example having under the scroll compressor 1200 of high-pressure bottle for exemplary viscosity, even if It is that 5mm can be used2/ s~32mm2/ s, lubricating oil compared with low viscosity, scroll compressor 1200 with low pressure vessel, It can equally implement, and same effect can be obtained.
In addition, the terpenes and class terpene of limonene etc. have dissolubility for plastics, but if 30% or less mixing is left The right side, then it is influenced few, is not the level as problem to the electrical insulating property that the plastics in scroll compressor 1200 require.But Be, have a case that the case where requiring long-term reliability and using temperature it is always high the problems such as in the case where, it is preferable to use Polyimides, polyimide amide or polyphenylene sulfide with chemical resistance.
In addition, in the winding of the motor part 203 of the scroll compressor 1200 of present embodiment, by varnish (heat cure Property insulating materials) via insulating coating coating burn invest on conductor.As Thermocurable insulating materials, polyimides can be enumerated Resin, epoxy resin and unsaturated polyester resin etc..Wherein, polyimide resin is applied using the state of the polyamic acid as precursor It applies, and attached with 300 DEG C or so burnings, thereby, it is possible to carry out polyimides.Known imidization reaction passes through amine and carboxylic acid anhydrides It reacts and causes.Even if R1123 refrigerant it is interelectrode short circuit in, it is also possible to reacted, thus by motor around (so that the polyimide precursor that aromatic diamine and aromatic tetracarboxylic dianhydride are reacted and formed is principal component) coating is poly- in group Acid imide acid varnish, can prevent interelectrode short circuit.
Therefore, even if in the state that the coil of motor part 203 is impregnated in liquid refrigerant, be also able to maintain into around The higher state of resistance between group inhibits the electric discharge between winding, and as a result, it is possible to the selfdecompositions for the R1123 refrigerant that is inhibited The effect of reaction.
Figure 35 is the office for indicating the construction near the power supply terminal of the scroll compressor 1200 of sixth embodiment of the present invention Portion's sectional view.
In Figure 35, indicate power supply terminal 171, glass insulation object 172, keep power supply terminal made of metal lid 173, The flag-shaped terminal 174 and lead 175 being connect with power supply terminal.In the scroll compressor 1200 of present embodiment, in vortex Glass insulation object on the power supply terminal 171 of the inside of the closed container 201 of compressor 1200 with being connected to and as insulating element The insulating element 176 of the 172 baked donut shapes being close to.The insulating element 176 of baked donut shape preferably has insulating properties, and to hydrofluoric acid With patience.For example, ceramic system insulator and HNBR rubber system baked donut shape spacer etc. can be enumerated.The insulation of baked donut shape Component 176 must be close to glass insulation object 172, but preferably also be close to connection terminal.
The power supply terminal 171 constituted in this way utilizes the insulating element 176 of baked donut shape, in the vortex of power supply terminal and lid The creepage distance of 1200 inner surface of formula compressor is elongated, can prevent tracking terminal, and prevent caused by the discharge energy of R1123 Kindling.In addition, the hydrofluoric acid etching glass insulant 172 generated by the decomposition of R1123 can be prevented.
In addition, the scroll compressor 1200 of present embodiment is also possible to open tap 218 to closed container 201 It is interior, and the compressor for the so-called high pressure shell mould being full of in closed container 201 by the refrigerant compressed by discharge chambe 215.It is another Aspect is also possible to open inlet hole 118 into closed container 201, by by 215 compression of discharge chambe in closed container 201 The scroll compressor 1200 for the so-called low pressure shell mould that preceding refrigerant is full of.In this case, add in closed container 201 In heat and the structure for being easy to generate temperature rising during in importing discharge chambe 215, the low-temperature refrigerant in discharge chambe 215 Low temperature caused by importing is more significant, in the disproportionated reaction for inhibiting R1123 preferably.
In addition, the scroll compressor 1200 of high pressure shell mould can also be constituted as follows, make to be discharged from tap 218 Refrigerant by around motor part 203, after being heated in closed container 201 using motor part 203, from discharge pipe 123 are discharged to outside closed container 201.According to this structure, even if the temperature for the refrigerant being discharged from discharge pipe 123 is equal, also can The refrigerant temperature in discharge chambe 215 is enough reduced, so in the disproportionated reaction for inhibiting R1123 preferably.
(the 7th embodiment)
Then, illustrate the 7th embodiment of the invention.
Figure 36 is the figure for the structure for illustrating the refrigerating circulatory device 1101 of seventh embodiment of the present invention.
In the refrigerating circulatory device 1101 of present embodiment, using compressor 1102, condenser 1103, as throttle mechanism The sequence of expansion valve 1104 and evaporator 1105 is connected using refrigerant piping 1106, and constitutes refrigeration cycle.It is making Working fluid (refrigerant) is sealed in SAPMAC method circuit.
Then, the structure of refrigerating circulatory device 1101 is illustrated.
As condenser 1103 and evaporator 1105, in the case where surrounding medium is air, fin-and-tube type heat can be used Exchanger or simultaneously manifold (micro-pipe type) heat exchanger etc..
Condenser 1103 when on the other hand, as the refrigerant that surrounding medium is salt water or dualistic formula refrigerating circulatory device With evaporator 1105, double pipe heat exchanger, heat-exchangers of the plate type or shell and tube heat exchanger can be used.
As expansion valve 1104, such as the electric expansion valve etc. of pulse motor driving method can be used.
In refrigerating circulatory device 1101, it is provided on condenser 1103 as will be carried out around heat exchange with refrigerant Medium (the 1st medium) drives the fluid machinery 1107a of the 1st delivery section of (flowing) to the heat-exchange surface of condenser 1103.It is steaming It is additionally provided on hair device 1105 as the surrounding medium (the 2nd medium) of heat exchange will be carried out with refrigerant to the heat of evaporator 1105 Exchange face drives the fluid machinery 1107b of the 2nd delivery section of (flowing).In addition, being equipped with surrounding medium in each surrounding medium Flow path 1116.
Here, as surrounding medium, if water or ethohexadiol etc. can also be used sometimes using the air in atmosphere Salt water.In addition, refrigeration cycle can be used in the case where refrigerating circulatory device 1101 is dualistic formula refrigerating circulatory device With the preferred refrigerant in operating temperature domain, such as hydrofluorocarbon (HFC), hydrocarbon (HC) or carbon dioxide.
It can be used as fluid machinery 1107a, 1107b of driving surrounding medium in the case where surrounding medium is air The centrifugal blowers such as the axial flow blowers such as propeller fan, crossflow fan or turbofan can in the case where surrounding medium is salt water Use centrifugal pump etc..In addition, in the case where refrigerating circulatory device 1101 is dualistic formula refrigerating circulatory device, as surrounding medium Fluid machinery 1107a, 1107b of conveying, compressor 1102 undertake the responsibility.
In condenser 1103, the refrigerant inside it is being flowed through with two-phase (state of the gas and liquid mixing) portion flowed through Position (hereinafter, in this specification, referred to as " the two-phase pipe of condenser ") is provided with condensation temperature test section 1110a, can measure system Refrigerant temperature.
In addition, being provided with condensator outlet temperature detection between the outlet of condenser 1103 and the entrance of expansion valve 1104 Portion 1110b.Condensator outlet temperature detecting part 1110b is able to detect the degree of subcooling (expansion valve 1104 of 1104 entrance of expansion valve Inlet temperature subtract condenser 1103 temperature value).
In evaporator 1105, (hereinafter, in this specification, claim flowing through the position that the refrigerant inside it is flowed through with two-phase For " the two-phase pipe of evaporator ") it is equipped with evaporating temperature test section 1110c, the temperature of the refrigerant in evaporator 1105 can be measured Degree.
Sucking is equipped in the sucting (between the outlet of evaporator 1105 and the entrance of compressor 1102) of compressor 1102 Temperature detecting part 1110d.Thereby, it is possible to measure the temperature (inlet temperature) for being inhaled into the refrigerant of compressor 1102.
As above-mentioned each temperature detecting part, for example, also using the outer of the piping or heat-transfer pipe flowed through by refrigerant sometimes The electronic thermostat that pipe is connected, sometimes also directly using the electronic type of the protecting pipe mode contacted with working fluid Thermostat.
The high pressure of detection refrigeration cycle is provided between the outlet of condenser 1103 and the entrance of expansion valve 1104 The high pressure of the pressure of side (from the refrigerant of the entrance for exporting to expansion valve 1104 of compressor 1102 with region existing for high pressure) Lateral pressure test section 1115a.
The low-pressure side of detection refrigeration cycle is provided with (from exporting to for expansion valve 1104 in the outlet of expansion valve 1104 The refrigerant of the entrance of compressor 1102 is with region existing for low pressure) pressure low-pressure lateral pressure test section 1115b.
As high side pressure test section 1115a, low-pressure lateral pressure test section 1115b, such as can be used the position of diaphragm Transfer changes the test section etc. of electric signal into.In addition it is also possible to use the difference gauge (pressure difference of the entrance of measurement expansion valve 1104 Measuring mechanism), instead of high side pressure test section 1115a and low-pressure lateral pressure test section 1115b.
In addition, refrigerating circulatory device 1101 is as all with each temperature detecting part, each pressure in the explanation of above structure The device of power test section is illustrated, but in aftermentioned control, can omit the test section without using detected value.
Then, the control method for carrying out refrigerating circulatory device 1101 is illustrated.Firstly, control when to common operating It is illustrated.
In common operating, the temperature difference as inlet temperature test section 110d and evaporating temperature test section 110c is calculated Compressor 1102 sucting in working fluid the degree of superheat.Moreover, control expansion valve 1104 so that the degree of superheat at For scheduled target superheat degree (for example, 5K).
In addition, the discharge unit in compressor 1102 also sets up discharge temperature test section (not shown), it is able to use its detection Value is controlled.In this case, the pressure of the temperature difference as discharge temperature test section and condensation temperature test section 1110a is calculated The degree of superheat of working fluid in the discharge unit of contracting machine 1102.Moreover, control expansion valve 1104 is so that the degree of superheat becomes pre- Fixed target superheat degree.
Control when then, to the special operating condition got higher a possibility that causing as disproportionated reaction is illustrated.
In present embodiment, in the case where the temperature detection value of condensation temperature test section 1110a is excessive, expansion valve is opened 1104, carry out the control for reducing the pressure, temperature of the high-pressure side working fluid in refrigerating circulatory device 1101.
In general, being controlled in the refrigerant for eliminating carbon dioxide, so that it is more than critical for not becoming The super critical condition of point (point of Tcri is recorded as in aftermentioned Figure 37).This is because in the supercritical state, substance becomes Neither gas is also not the state of liquid, behavior is unstable and active.
Here, in present embodiment, in the temperature of the critical point (critical-temperature) for a benchmark, according to the temperature control The aperture of expansion valve 1104 processed, so that condensation temperature is kept off within scheduled value (5K).In addition, containing in use In the case where the working fluid (mix refrigerant) of R1123, controlled using the critical-temperature of the mix refrigerant, so that The temperature of working fluid does not become (- 5 DEG C of critical-temperature) or more.
Figure 37 is the Mollier line for illustrating the movement of the refrigerating circulatory device 1101 in seventh embodiment of the present invention Figure.Thermoisopleth 1108 and saturation liquidus-saturated vapor line 1109 are indicated in Figure 37.
In Figure 37, the refrigeration cycle under the excessive pressure condition for becoming disproportionated reaction Producing reason is with solid line (EP) it indicates, the refrigeration cycle under running well is indicated with dotted line (NP).
If the temperature value being set in the condensation temperature test section 1110a of the two-phase pipe of condenser 1103 relative to depositing in advance The critical-temperature stored up in control device becomes within 5K (EP in Figure 37), then control device controls the aperture of expansion valve 1104 To open side.As a result, the on high-tension side condensing pressure of refrigerating circulatory device 1101 reduces as shown in the NP of Figure 37, so It is able to suppress since the excessive of refrigerant pressure rises the disproportionated reaction generated, or even if in the case where generating disproportionated reaction, Also it is able to suppress pressure rising.
In addition, above-mentioned control method is according to the condensation temperature measured by condensation temperature test section 1110a, indirectly The method grasped the pressure in condenser 1103 and control the aperture of expansion valve 1104.This method is in the workflow containing R1123 Body azeotropic is azeotrope-like, does not have temperature difference (temperature with the dew point and boiling point of the working fluid containing R1123 in condenser 1103 Gradient) or lesser situation under, condensation temperature is able to use as index to replace condensing pressure, so particularly preferably.
1 > of variation of < control method
In addition, as described above, also can be used what the aperture for carrying out expansion valve 1104 based on the pressure directly measured controlled Method, to replace indirectly detecting the high pressure (condensation of refrigerating circulatory device 1101 by comparing critical-temperature and condensation temperature Refrigerant pressure in device 1103) state and to the control method of the appropriate movement of the instructions such as expansion valve 1104.
Figure 38 is the Mollier line chart for illustrating the control action of the variation 1 in seventh embodiment of the present invention.
In Figure 38, by from the discharge unit of compressor 1102 to condenser 1103, the entrance of expansion valve 1104, and generate excessive The refrigeration cycle of state that rises of pressure indicated with solid line (EP), indicated with dotted line (NP) from above-mentioned excessive pressure state The refrigeration cycle of the state of disengaging.
In operating, in pressure (critical pressure) P for the critical point for being stored in advance in control devicecriIt subtracts by such as high pressure The pressure P for the outlet in condenser 1103 that lateral pressure test section 1115a is detectedcondPressure difference than scheduled value (Δ p= In the case where 0.4MPa) small (EP in Figure 38), it is determined as that the outlet from compressor 102 to the entrance of expansion valve 1104, contains A possibility that having and generate disproportionated reaction in the working fluid of R1123, or generating, is higher, in order to avoid holding under the condition of high voltage It is continuous, side is opened into the aperture control of expansion valve 1104.
As a result, the refrigeration cycle in Figure 38, which as shown in the NP in figure, is able to suppress, acts on high pressure (condensation pressure Power) side that reduces, and become disproportionated reaction Producing reason or the pressure that generates after disproportionated reaction rises.
This control method is preferred for the case where working fluid containing R1123 is non-azeotrope state, particularly condensation pressure The larger situation of temperature gradient under power.
2 > of variation of < control method
It is above-mentioned with critical-temperature or critical pressure to replace in addition it is also possible to using the control method based on degree of subcooling Control method on the basis of power.
Figure 39 is the variation 2 for indicating the control method of the refrigerating circulatory device 1101 in seventh embodiment of the present invention The Mollier line chart of control action.
In Figure 39, the refrigeration cycle under the excessive pressure condition as disproportionated reaction Producing reason is set as EP And it is indicated, the refrigeration cycle under running well is set as NP and is represented by dotted lines with solid line.
In general, in refrigerating circulatory device 1101, pass through the refrigeration cycle of expansion valve 1104 and compressor 1102 etc. Control, heat exchanger size and refrigerant charge amount appropriate are suitably changed, and the temperature of 1103 inner refrigerant of condenser is with temperature phase A degree of mode high for surrounding medium is set.In addition, degree of subcooling generallys use the value of 5K or so.Same refrigeration is followed Working fluid used in loop device 1101 containing R1123 also uses same measure.
Using in the refrigerating circulatory device 1101 of measure as described above, if refrigerant pressure becomes excessively high, such as scheme Shown in 39 EP like that, the tendency that the degree of subcooling in 1104 entrance of expansion valve also rises.Therefore, in present embodiment, with On the basis of the degree of subcooling of the refrigerant of 1104 entrance of expansion valve, the aperture of expansion valve 1104 is controlled.
In addition, in present embodiment, by the degree of subcooling of the refrigerant of the entrance in expansion valve 1104 when running well Regard 5K as, on the basis of 3 times of the value of 15K, controls the aperture of expansion valve 1104.The degree of subcooling for being set as threshold value is set as 3 It is because according to operating condition difference, degree of subcooling may change in the range again.
Specifically, firstly, according to the detected value and condensator outlet temperature detecting part of condensation temperature test section 1110a The detected value of 1110b calculates degree of subcooling.Degree of subcooling is that the detected value of condensation temperature test section 1110a has subtracted condenser and goes out The value of the detected value of mouth temperature detecting part 1110b.Moreover, the degree of subcooling in the entrance of expansion valve reaches scheduled value (15K) When, act the aperture of expansion valve 1104 to open direction, and control as the high pressure as refrigerating circulatory device 1101 The direction of partial reduction condensing pressure (from the solid line of Figure 39 to dotted line).
Condensing pressure, which is reduced, to be reduced with condensation temperature equally, so from condensation temperature Tcond1To Tcond2It reduces, in expansion valve The degree of subcooling of 1104 entrances is from Tcond1-TexinTo Tcond2-TexinDegree of subcooling is reduced (here, the work of 1104 entrance of expansion valve Making fluid temperature (F.T.) will not change, and be set as Texin).As described above, as the condensing pressure in refrigerating circulatory device 1101 reduces, mistake Cooling degree also reduces, so even if can also control in refrigerating circulatory device 1101 on the basis of degree of subcooling Condensing pressure.
Figure 40 is the piping for indicating to constitute a part of the piping of the refrigerating circulatory device 1101 of seventh embodiment of the present invention The figure of connector 1117.
In the conditioner (air-conditioning that refrigerating circulatory device 1101 of the invention is used for for example home-use bypass type Device) in the case where, refrigerating circulatory device 1101 is by the outdoor unit with outdoor heat exchanger and has indoor heat exchanger Indoor unit constitute.Outdoor unit and indoor unit cannot can be integrated in its structure.Therefore, expand using shown in Figure 40 Mechanical connector as connecting tube 1111 is opened, connects outdoor unit with indoor unit in setting place.
If the connection status of mechanical connector is poor due to clumsiness of operation etc., then refrigerant is from junction portion Leakage, causes adverse effect to equipment performance.In addition, the working fluid itself containing R1123 is the temperature with warm warming effect Room effect gas, so undesirable influence may also be caused on earth environment.It is let out it is therefore desirable to quickly detect and repair refrigerant Leakage.
Have in the detection method of refrigerant leakage to the position and apply detection agent, and whether to generate bubble and detected Method and method etc. using detection sensor, but the time of the operation of these methods is larger.
Therefore, in present embodiment, by winding the sealing element containing polymerization accelerant in expansion 1111 periphery of connecting tube 1112, it is easy refrigerant leak detection, and realize the reduction of leakage rate.
Specifically, being generated using when generating polymerization reaction as fluorocarbons tree in the working fluid containing R1123 The principle of the polytetrafluoroethylene (PTFE) of one of rouge.Specifically, constituting as follows, make working fluid and polymerization containing R1123 Promotor is intentionally contacted in leakage position, and in the leakage position, polytetrafluoroethylene (PTFE) is precipitated, solidifies.As a result, visually It is readily detected leakage, so the discovery and repairerment the time it takes until leakage can be shortened.
In addition, the generating unit of polytetrafluoroethylene (PTFE) is the leakage position of the working fluid containing R1123, so naturally Ground is preventing the position leaked from generating, is adhering to product of polymerization, so leakage rate can also be reduced.
(the 8th embodiment)
Then, illustrate the 8th embodiment of the invention.
Figure 41 is the figure for indicating the structure of refrigerating circulatory device 1130 of eighth embodiment of the present invention.
The difference of the structure of refrigerating circulatory device 1130 and the refrigerating circulatory device 1101 of the 7th embodiment shown in Figure 41 Dissimilarity is, connect again with the entrance and exit of expansion valve 1104, and is provided with the bypass pipe 1113 with open and close valve.Separately Outside, it is as other discrepancys, with relief valve between the outlet of condenser 1103 and the entrance of expansion valve 1104 1114 cleaning line.The open side of relief valve 1114 is configured at outdoor.In addition, in Figure 41, be omitted illustrated using Figure 36 it is each The record of temperature detecting part, each pressure detecting portion etc..
The control method illustrated in carrying out the 7th embodiment is (for example, the aperture of control expansion valve 1104 is so that contain The critical-temperature of the working fluid of R1123 subtracts the value in the temperature working fluid of the two-phase pipe measurement of condenser 1103 as 5K Control method, or be controlled such that working fluid critical pressure and by high side pressure test section 1115a detection The difference of pressure becomes, the control method of 0.4MPa or more), in the case where the aperture for opening expansion valve 1104, it is also possible to press The case where not seeing improvement in power decline generates the situation for accelerating pressure decrease speed.
Therefore, in the case where producing situation as described above, the bypass pipe 1113 for being set to present embodiment is opened Open and close valve makes refrigerant flow through bypass pipe 1113, thereby, it is possible to rapidly reduce on high-tension side working fluid pressure, inhibits system The breakage of SAPMAC method device 1130.
Moreover, the aperture of expansion valve 1104 to be set as to the control of big aperture and the control of the open and close valve set on bypass pipe 1113 On the basis of, when emergent stopping compressor 1102 can prevent the breakage of refrigerating circulatory device 1130, in this aspect more preferably. In addition, preferably being flowed on rapidly reducing on high-tension side working fluid pressure in the case where making 1102 emergent stopping of compressor Body machinery 1107a, 1107b will not stop.
The situation of the above correspondence is carried out it is also assumed that not inhibiting the phenomenon that disproportionated reaction, specifically, working fluid faces Boundary's temperature and by condensation temperature test section 1110a detection condensation temperature difference be lower than 5K the case where or working fluid critical pressure Power and by high side pressure test section 1115a detection pressure difference be lower than 0.4MPa the case where.In this case, refrigeration cycle Refrigerant pressure in device 1130 is also possible to rise, so needing to become to outside drain the refrigerant of high pressure, prevents from freezing The breakage of circulator 1130.Therefore, it is opened the working fluid containing R1123 in refrigerating circulatory device 1130 is outside The control of the relief valve 1114 of portion space cleaning.
Here, setting position of the relief valve 1114 in refrigerating circulatory device 1130 is preferably high-pressure side.In addition, especially excellent Select the outlet setting of the condenser 1103 indicated from present embodiment to entrance (in the position, the workflow of expansion valve 1104 Body is the supercooling liquid status of high pressure, so the resulting water punching for being easy to cause to rise with the pressure sharply of disproportionated reaction The effect of hitting), or (in the position, working fluid is with high temperature from the setting of the discharge unit of compressor 1102 to the entrance of condenser 1103 The gas of high pressure exists, so molecular motion becomes active, be easy to generate disproportionated reaction itself).
Relief valve 1114 is set to outdoor unit side.It, then can be with work if it is air-conditioning device in the case where the form Fluid is not constituted to the mode that the living space of indoor releases, then can be with working fluid not if it is cold-storage unit The composition released to the commodity display side of showcase etc., so can say is the mode that the mankind and commodity are not directly contributed with influence The form of consideration.
In addition, preferably opening relief valve 1114, and stop refrigerating circulatory device 1130, for example make power supply in safety OFF。
(the 9th embodiment)
Then, illustrate the 9th embodiment of the invention.
Figure 42 is the figure for indicating the structure of refrigerating circulatory device 1140 of ninth embodiment of the present invention.
The difference of the structure of refrigerating circulatory device 1140 and the refrigerating circulatory device 1101 of the 7th embodiment shown in Figure 42 Point is, is equipped with: detection is flowed into the 1st medium temperature test section 1110e of the temperature of the 1st medium before condenser 1103； The 2nd medium temperature test section 1110f of the temperature of the 2nd medium before evaporator 1105 is flowed into detection.In addition, each temperature The input electric power of the detected value and compressor 1102 of test section and each pressure detecting portion and fluid machinery 1107a, 1107b with The point that certain time is recorded in electronic recording equipment (not shown) is also different.
Figure 43 is to indicate the movement of the refrigerating circulatory device 1140 of ninth embodiment of the present invention on Mollier line chart Figure.
In Figure 43, the condensing pressure when refrigeration cycle indicated using EP is generated as disproportionated reaction is followed with the refrigeration that NP is indicated Ring indicates refrigeration cycle when running well.In addition, circulation change (the example: NP's and EP in Figure 43, when rising to condensing pressure The difference etc. of evaporating pressure) it is briefly described, so not recording.
As the two-phase pipe measurement in condenser 1103, working fluid containing R1123 condensation temperature sharply on The reason of rising considers: (1) ambient temperature Tmcon、TmevaRising sharply, (2) compressor 1102 power rising cause Boosting and (3) surrounding medium flowing variation (any one of fluid machinery 1107a, 1107b's of driving surrounding medium Power rises).In addition, the phenomenon peculiar as the working fluid containing R1123 other than these main causes, can enumerate (4) Boosting caused by disproportionated reaction.Therefore, in present embodiment, in order to be determined as that the disproportionated reaction of (4) has occurred, to not having The phenomenon that generating (1)~(3) is differentiated and is controlled.
Therefore, in the control method of present embodiment, relative to (the 1)~temperature of (3) or the variable quantity of input electric power, In the biggish situation of the variable quantity of the condensation temperature of working fluid containing R1123, side is opened into the control of expansion valve 1104.
Hereinafter, being illustrated to specific control method.Firstly, being not easy comparison temperature variable quantity and defeated under same datum Enter the variable quantity of power value, so being controlled such that input electric power does not change when measurement temperature variation.That is, measuring When temperature variation, the motor speed of compressor 1102 and fluid machinery 1107a, 1107b keep certain.
For example, temperature variation is measured such as 10 seconds~1 minute and is measured with some time interval.Before the measurement, Such as before 10 seconds~1 minute or so controlled, by the defeated of compressor 1102 and fluid machinery 1107a, 1107b Enter amount of power and is kept into certain value.At this point, the per unit of the input electric power amount of compressor 1102 and fluid machinery 1107a, 1107b The variable quantity of time is essentially a zero.Here, " substantially " being set as zero is because of caused by the refrigerant deflection in compressor 1102 The variation of the suction condition of compressor 1102 or the 1st medium in fluid machinery 1107a, 1107b and the 2nd medium are surrounding air In the case where, due to the influence of wind being blown into etc., input electric power generates a little change.Refer to that is, being somebody's turn to do " essentially a zero ", comprising few Perhaps it changes, and smaller than scheduled specified value.
Under the conditions of above such, in the per unit of the condensation temperature determined by condensation temperature test section 1110a Between variable quantity than the 1st medium detected by the 1st medium temperature test section 1110e temperature variable quantity per unit time All with either one or two of the variable quantity per unit time of temperature of the 2nd medium that is detected by the 2nd medium temperature test section 110f In the case where big, it is believed that produce disproportionated reaction, by expansion valve 1104 control for evolution to.
In addition, if the only aperture control of expansion valve 1104, then cope with not and can control the pressure generated with disproportionated reaction The case where rising, also can have in parallel bypass pipe 1113 with expansion valve 1104 as indicating in the 8th embodiment, or Make 1102 emergent stopping of compressor, or is further arranged to dresses such as the external relief valves 1114 released refrigerant and reduce pressure It sets.
In addition, illustrating in present embodiment to be set to the variation of the temperature detecting part of the two-phase pipe of condenser 1103 Implement the control example of the expansion valve 1104 of control on the basis of amount, but can also be from the discharge unit of compressor 1102 to expansion valve 1104 entrance, on the basis of the variable quantity of the pressure of any point, can also be with the degree of subcooling of 1104 entrance of expansion valve On the basis of variable quantity.
In addition, when either present embodiment and the 7th above-mentioned embodiment or the 8th embodiment formula are applied in combination When, it can obtain further increasing for reliability, and it is preferred that.
(the 10th embodiment)
Then, illustrate the 10th embodiment of the invention.
Figure 44 is the sectional view of the scroll compressor 1200 of tenth embodiment of the present invention.
It is identical as the 6th embodiment other than being set to the presence or absence of the leaf valve 219 of tap 218, so other to this Incomplete structure explanation.
In 6th embodiment, it is additionally provided with leaf valve 219 (check-valves) in tap 218, but in present embodiment, it can also Leaf valve 219 is not arranged in tap 218.Therefore, discharge room 122 via tap 218 always with neighbouring discharge chambe 215 Connection, room 122 and discharge chambe 215, which is discharged, becomes roughly equal pressure state.In addition, in present embodiment, not in tap 218 setting leaf valves 219, so being also not provided with valve guard 121.
The condition for being especially susceptible to generate disproportionated reaction is condition under excessive high temperature and pressure, so generating sometimes not is rule State under fixed operating condition, such as since the blocking of the refrigerant piping in refrigeration cycle, the air-supply of condenser stop Only, two-port valve or triple valve are forgotten to open etc., the state that discharge pressure (high-pressure side of refrigeration cycle) excessively rises, or Due to the torque deficiency etc. of the motor (motor part 3) of compressor, compression mechanism does not carry out the compression for making refrigerant boost The state of work.
Under these conditions, when continuing to supply electric power to scroll compressor 1200, to composition scroll compressor 1200 motor glut electric current, electric motor overheating.As a result, the motor in scroll compressor 1200 is relative to system Cryogen plays a role as heater, and internal refrigerant pressure and temperature excessively rise.As a result, constituting the stator of motor Winding insulator welding, the core wire (electric lead) of winding is in contact with each other, and causes the phenomenon of referred to as layer short circuit.Layer transcient short circuit time High-energy is propagated to refrigerant around, so the starting point of disproportionated reaction can be become.
Therefore, in present embodiment, continue to supply to motor in the state for not carrying out boost action with compression mechanism In the case where electric power, inhibiting the high-pressure side of refrigeration cycle, i.e. the pressure of the closed container 201 of storage motor rises, if For by way of pressure avoids the occurrence condition of disproportionated reaction.Specifically, it is total via tap 218 to be set as discharge room 122 It is the structure being connected to neighbouring discharge chambe 215.
As noted above, according to the present embodiment, compressed action is not carried out in compression mechanism and supply electricity to motor In the case where power, motor is as the refrigerant inside heater heating closed container 201.But such as even if due to heating, Refrigerant pressure rises, and also can act on the pressure to discharge chambe 215 via tap 218, make compression mechanism reverse rotation to system Pressure in the low-pressure side discharge closed container 201 in SAPMAC method circuit, so can be avoided the occurrence condition as disproportionated reaction Abnormal pressure rise.
As noted above, the 1st mode indicated in the 6th embodiment~the 10th embodiment of the invention, will contain 1, The refrigerant of 1,2- trifluoro-ethylene be used as working fluid, by polyalcohol ester oil be used as compressor lubricating oil, and have make to be vortexed The discharge chambe that the fixed scroll that the scroll wrap of shape is erected from end plate is upwardly formed with the engagement of convolution scroll in both sides.And And the sucking volumetric ratio of the 1st discharge chambe of the scroll wrap outer wall side for being formed in convolution scroll is made to be formed in convolution scroll The sucking volume of 2nd discharge chambe of scroll wrap inner wall side is big.
According to this structure, refrigerant is able to suppress to be added in the path of detent position for reaching the 1st discharge chambe 15a Heat, so being able to suppress the disproportionated reaction of R1123.In addition, the carbonyl of polyalcohol ester oil is captured as starting the contract of disproportionated reaction The free radical of machine, so being able to suppress the disproportionated reaction of R1123.
In addition, the 2nd mode the 1st mode or on the basis of, working fluid is also possible to the mixing work containing difluoromethane Make fluid, and difluoromethane is 30 weight % or more, 60 weight % or less.Alternatively, it is also possible to being the mixing work containing tetrafluoroethane Make fluid, and tetrafluoroethane is 30 weight % or more, 60 weight % or less.Alternatively, it is also possible to being containing difluoromethane and tetrafluoro second The hybrid working fluid of alkane, and difluoromethane and tetrafluoroethane are mixed, the mixed proportion for mixing difluoromethane and tetrafluoroethane For 30 weight % or more, 60 weight % or less.
Thereby, it is possible to inhibit the disproportionated reaction of R1123, and improve refrigerating capacity and COP.
3rd mode, can also be with from neopentyl glycol, trimethylolpropane season penta on the basis of the 1st mode or 2 mode That selects in four pure and mild dipentaerythritols at least plants as the alcohol for constituting the polyalcohol ester oil.
Thereby, it is possible to freely adjust the viscosity of refrigerator oil, so can ensure the oil film between blade and piston, energy Enough generations for inhibiting sliding heat.
For 4th mode in the 1st~the 3rd mode on the basis of either type, polyalcohol ester oil can also contain phosphoric acid ester Extreme pressure compound.
Friction is reduced by being adsorbed in extreme pressure compound on sliding part surface as a result, is able to suppress fever, and inhibit The selfdecomposition of R1123 refrigerant is reacted.
For 5th mode in the 1st~3 mode on the basis of either type, polyalcohol ester oil can also be anti-oxidant containing phenol system Agent.
As a result, phenol antioxidant rapidly capture sliding part generate free radical, so can prevent free radical with Refrigerant R1123 reaction.
6th mode in the 1st~the 3rd mode on the basis of either type, polyalcohol ester oil be also possible to 1% or more and The lubricating oil higher than base oil lower than mixing viscosity in 50% terpenes or class terpene, or be pre-mixed and terpenes or class terpene The lubricating oil of hyperviscosity more than isodose, and the lubrication mixed with the addition oil of base oil equivalent viscosities with base oil will be adjusted to Oil.
Thereby, it is possible to inhibit the disproportionated reaction of R1123.
7th mode also may include the electricity of driving convolution scroll on the basis of either type in the 1st~the 3rd mode Motivation portion, being thermally cured property of motor part insulating materials apply electric wire made of burning invests on conductor for line across insulating coating Circle.
Thermocurable insulating materials is applied by the winding to the motor coil in compressor as a result, even if by line Circle is impregnated in the state of liquid refrigerant, is also kept the resistance between winding with higher state, is inhibited electric discharge, as a result, energy Enough inhibit the decomposition of R1123 refrigerant.
8th mode is close including storage discharge chambe and motor part in the 1st~the 3rd mode on the basis of either type Container is closed, closed container, which has, is set to the power supply terminal of oral area across insulating element and for power supply terminal to be connect with lead Connection terminal.Moreover, the insulation for the baked donut shape being close to insulating element is coupled on the power supply terminal on the inside of closed container Component.
The superinsulation object on the power supply terminal on the inside of metal shell as a result, so passing through the most short distance extended between conductor From being able to suppress the defective insulation of power supply terminal, kindling caused by the discharge energy of R1123 can be prevented.In addition, can prevent When R1123 is decomposed, the hydrogen fluoride that generates is contacted with glass insulation object, and prevents the corrosion of glass insulation object and damaged.
9th mode provides a kind of refrigerating circulatory device, by the compressor of either type in the 1st~the 8th mode, to being compressed The refrigerant gas that machine compresses and becomes high pressure carries out cooling condenser to the high-pressure refrigerant progress after being liquefied by condenser The evaporator of the throttle mechanism of decompression and the refrigerant vapor being throttled after mechanism decompression is constituted using piping connection.
Thereby, it is possible to inhibit the disproportionated reaction of R1123, and improve refrigerating capacity and COP.
10th mode is on the basis of 9 mode, it is possible to have set on the condensation temperature test section of condenser, control section The aperture of mechanism is flowed so that the difference of the critical-temperature of working fluid and the condensation temperature detected by condensation temperature test section becomes 5K or more.
Thereby, it is possible to which the temperature working fluid measured by temperature detecting part is set as suitable with its pressure, throttling machine is controlled The aperture of structure, so that high-pressure side temperature working fluid (pressure) to be limited in the ampleness for considering safety according to critical pressure 5K or more.Thereby, it is possible to become excessively high the condensing pressure of high pressure further, so being able to suppress, there may be excessive The disproportionated reaction for the result (the close result of intermolecular distance) that pressure rises, it can be ensured that the reliability of device.
11st mode is on the basis of 9 mode, it is possible to have set on the discharge unit of compressor and entering for throttle mechanism Mouthful between high side pressure test section, control the aperture of throttle mechanism so that the critical pressure of working fluid with by high pressure The difference of the pressure of lateral pressure test section detection becomes 0.4MPa or more.
Accordingly, for the working fluid containing R1123, especially the biggish non-azeotropic refrigerant of temperature gradient is being used In the case of, refrigerant pressure can be more accurately detected, its testing result is further used, carries out the aperture control of throttle mechanism System, and reduce the high side pressure in refrigerating circulatory device (condensing pressure).Therefore, it is able to suppress disproportionated reaction, and can be mentioned The reliability of high device.
12nd mode is on the basis of 9 mode, it is possible to have the condenser between condenser and throttle mechanism Outlet temperature test section controls the aperture of throttle mechanism so that the condensation temperature detected by condensation temperature test section with by cold The condensator outlet temperature difference of condenser outlet temperature test section detection becomes 15K or less.
Thereby, it is possible to use the degree of subcooling indicated with the difference of condensation temperature test section and condensator outlet temperature detecting part Testing result, carry out throttle mechanism aperture control, the excessive pressure of the working fluid in refrigerating circulatory device can be prevented Power rises.Therefore, it is able to suppress disproportionated reaction, and can be improved the reliability of device.
13rd mode is on the basis of 9 mode, comprising: conveying by condenser carry out heat exchange the 1st medium it is the 1st defeated Send portion；Conveying is carried out the 2nd delivery section of the 2nd medium of heat exchange by evaporator；Set on the condensation temperature test section of condenser；Inspection Survey the 1st medium temperature test section of the temperature for the 1st medium being flowed into before condenser；It is flowed into before evaporator with detection 2nd medium temperature test section of the temperature of the 2nd medium.Furthermore it is assumed that the variable quantity per unit time of the input of compressor, In the variable quantity per unit time of the input of the variable quantity per unit time and the 2nd delivery section of the input of 1 delivery section at least The one situation smaller than scheduled specified value.Moreover, the condensation temperature detected by condensation temperature test section per unit time Variable quantity than the 1st medium detected by the 1st medium temperature test section temperature variable quantity per unit time and be situated between by the 2nd It, can also in the case that either one or two of variable quantity per unit time of temperature of the 2nd medium of matter temperature detecting part detection is all big With by throttle mechanism control evolution to.
As a result, when the pattern of surrounding medium does not change, in the case where condensation temperature generates variation sharply, it is believed that The rising of pressure caused by disproportionated reaction is produced, so can control the aperture of throttle mechanism in open direction.Therefore, energy Enough improve the reliability of device.
14th mode on the basis of either type, also can use containing polymerization accelerant in the 9th~the 13rd mode Sealant covering constitutes the periphery of the connector of the piping of refrigeration cycle.
As a result, in the case where working fluid is leaked from connector, polymerization accelerant contained by sealant and contain R1123's Working fluid carries out polymerization reaction, generates product of polymerization.Therefore, leakage is visually easily confirmed, and the polymerization generates Object plays a role as the obstacle for the refrigerant stream released to outside, is able to suppress refrigerant leakage.
15th mode in the 1st~the 8th mode on the basis of either type, discharge room can also via tap always with Discharge chambe connection.
Even if compression mechanism is supplied electric power without compressed action and to motor as a result, motor adds as heater Refrigerant inside hot closed container, refrigerant pressure rise, also act on the pressure to discharge chambe via tap, make compressor Structure reverse rotation, the pressure into the low-pressure side of refrigeration cycle discharge closed container.Therefore, it can be avoided as disproportionated reaction Occurrence condition abnormal pressure rise.
Industrial availability
As described above, the present invention can provide the compressors, lubricating oil and system that are more suitable for using the working fluid containing R1123 SAPMAC method device is useful so also can be used in the purposes such as water heater, air conditioner for automobile, freezing-cooling storeroom and dehumidifier.
Description of symbols
1 closed container
2 compression mechanical parts
3 motor parts
4 axis
4a eccentric axial portion
6 compressor lubricating oil
11 base bearing components
12 fixed scrolls
13 convolution scrolls
13c convolution scroll scroll wrap
The back side 13e
14 rotation limiting mechanisms
15 discharge chambes
The 1st discharge chambe of 15a, 15a-1,15a-2
The 2nd discharge chambe of 15b, 15b-1,15b-2
16 suction lines
17 suction inlets
18 taps
19 leaf valves
20 store oil portions
25 pumps
26 oily supply holes
29 back pressure chambers
30 high-pressure areas
31 discharge rooms
32 mufflers
50 discharge pipes
61 compressors
62 condensers
63 throttle mechanisms
64 evaporators
66 bearing portions
68,68a-1,68a-2,68b-1,68b-2,68ab-1,68ab-2,68ab-3 by-pass prot
69 valve guards
71 power supply terminals
72 glass insulation objects
73 made of metal lids
74 flag-shaped terminals
75 leads
76 insulating elements
78 seal members
100,101,130,140 refrigerating circulatory device
102 compressors
103 condensers
104 expansion valves
105 evaporators
106 refrigerant pipings
107a, 107b fluid machinery
108 thermoisopleths
109 saturation liquidus-saturated vapor lines
110a condensation temperature test section
110b condensator outlet temperature detecting part
110c evaporating temperature test section
110d inlet temperature test section
The 1st medium temperature test section of 110e
The 2nd medium temperature test section of 110f
111 expansion connecting tubes
112 sealing elements
113 bypass pipes
114 relief valves
115a high side pressure test section
115b low-pressure lateral pressure test section
The flow path of 116 surrounding mediums
117 pipe-fitting joints
120 store oil portions
121 valve guards
122 discharge rooms
123 discharge pipes
124 mufflers
125 pumps
126 oily supply holes
129 back pressure chambers
161 compressors
162 condensers
163 throttle mechanisms
164 evaporators
166 bearing portions
168,168a-1,168a-2,168b-1,168b-2,168ab-1,168ab-2,168ab-3 by-pass prot
171 power supply terminals
172 glass insulation objects
173 made of metal lids
174 flag-shaped terminals
175 leads
176 insulating elements
178 seal members
200 scroll compressors
201 closed containers
202 compression mechanical parts
203 motor parts
204 axis
204a eccentric axial portion
206 compressor lubricating oil
211 base bearing components
212 fixed scrolls
213 convolution scrolls
The back side 213e
214 rotation limiting mechanisms
215 discharge chambes
The 1st discharge chambe of 215a
The 2nd discharge chambe of 215b
216 suction lines
217 suction inlets
218 taps
219 leaf valves
230 high-pressure areas
1100,1101,1130,1140 refrigerating circulatory device
1102 compressors
1103 condensers
1104 expansion valves
1105 evaporators
1106 refrigerant pipings
1107a, 1107b fluid machinery
1108 thermoisopleths
1109 saturation liquidus-saturated vapor lines
1110a condensation temperature test section
1110b condensator outlet temperature detecting part
1110c evaporating temperature test section
1110d inlet temperature test section
The 1st medium temperature test section of 1110e
The 2nd medium temperature test section of 1110f
1111 expansion connecting tubes
1112 sealing elements
1113 bypass pipes
1114 relief valves
1115a high side pressure test section
1115b low-pressure lateral pressure test section
The flow path of 1116 surrounding mediums
1117 pipe-fitting joints
1200 scroll compressors.

Claims (14)

1. a kind of refrigerating circulatory device characterized by comprising
Compressor, the refrigerant that will contain 1,1,2- trifluoro-ethylene is used as working fluid, and polyalcohol ester oil is used as compressor Use lubricating oil；
Cooling condenser is carried out to the refrigerant gas for becoming high pressure by the compressor compresses；
To the throttle mechanism depressurized by the high-pressure refrigerant after condenser liquefaction；
To the evaporator to be gasified by the refrigerant after throttle mechanism decompression；
The piping that the compressor, the condenser, the throttle mechanism and the evaporator are linked；
Convey the 1st delivery section that the 1st medium of heat exchange is carried out in the condenser；
Convey the 2nd delivery section that the 2nd medium of heat exchange is carried out in the evaporator；
Set on the condensation temperature test section of the condenser；
Detect the 1st medium temperature test section of the temperature of the 1st medium before being flowed into the condenser；With
The 2nd medium temperature test section of the temperature of the 2nd medium before being flowed into the evaporator is detected,
It is solid the compressor and the 1st delivery section, the input electric power amount of the 2nd delivery section to be kept into being controlled Under conditions of definite value, by condensation temperature test section detection condensation temperature variable quantity ratio per unit time by described the The variable quantity per unit time of the temperature of the 1st medium of 1 medium temperature test section detection and by the 2nd medium temperature It, will be described in the case that either one or two of variable quantity per unit time of temperature of the 2nd medium of test section detection is all big Throttle mechanism to opening direction controlling,
The compressor includes:
The scroll wrap of vortex shape from end plate standing made of fixed scroll and convolution scroll；
The discharge chambe for making the fixed scroll and the convolution scroll engagement and being formed；
Set on the end plate central position of the fixed scroll, to discharge room be open tap；
By-pass prot, be set to the fixed scroll the end plate, with the discharge chambe with the tap be connected to when The discharge chambe is connected to the discharge room at the time of carving different；With
Check-valves is set to the by-pass prot, allows the circulation from the discharge chambe side to the discharge room side.
2. refrigerating circulatory device as described in claim 1, it is characterised in that:
In the compressor, the check-valves is the leaf valve set on the end plate face of the fixed scroll.
3. refrigerating circulatory device as claimed in claim 1 or 2, it is characterised in that:
In the compressor, the discharge room is always connected to the discharge chambe via the tap.
4. refrigerating circulatory device as described in claim 1, it is characterised in that:
The working fluid is the hybrid working fluid containing difluoromethane and the difluoromethane is 30 weight % or more, 60 weights Measuring % structure, the hybrid working fluid containing tetrafluoroethane and the tetrafluoroethane below is 30 weight % or more, 60 weight % Structure below and hybrid working fluid containing difluoromethane and tetrafluoroethane and by the difluoromethane and the tetrafluoro Ethane mixing, the mixed proportion for mixing the difluoromethane and the tetrafluoroethane is that 30 weight % or more, 60 weight % is below Any structure in structure.
5. refrigerating circulatory device as described in claim 1, it is characterised in that:
It is at least one kind of as described in being constituted using what is selected from neopentyl glycol, trimethylolpropane, pentaerythrite and dipentaerythritol The alcohol of polyalcohol ester oil.
6. refrigerating circulatory device as described in claim 1, it is characterised in that:
The polyalcohol ester oil contains phosphoric acid ester extreme pressure compound.
7. refrigerating circulatory device as described in claim 1, it is characterised in that:
The polyalcohol ester oil contains phenol antioxidant.
8. refrigerating circulatory device as described in claim 1, it is characterised in that:
The polyalcohol ester oil is in 1% profit higher than base oil more than or lower than mixing viscosity in 50% terpenes or class terpene Lubricating oil, or be pre-mixed the lubricating oil with hyperviscosities more than terpenes or terpenoid class isodose and will be adjusted to same with base oil The lubricating oil that isoviscous addition oil is mixed with base oil.
9. refrigerating circulatory device as described in claim 1, it is characterised in that:
The compressor includes the motor part for driving the convolution scroll, being thermally cured property of the motor part insulating materials Electric wire made of investing on conductor is burnt across insulating coating coating for coil.
10. refrigerating circulatory device as claimed in claim 9, it is characterised in that:
The compressor includes the closed container for storing the discharge chambe and the motor part,
The closed container includes:
The power supply terminal of oral area is set to via insulating element；
Connection terminal for the power supply terminal to be connect with lead；With
It is closely configured with the insulating element on the power supply terminal of the inside of the closed container, baked donut shape Insulating element.
11. refrigerating circulatory device as described in claim 1, it is characterised in that:
The compressor includes:
The scroll wrap of vortex shape from end plate standing made of fixed scroll and convolution scroll；
The discharge chambe for making the fixed scroll and the convolution scroll engagement and being formed；
It is formed in the 1st discharge chambe of the scroll wrap outer wall side of the convolution scroll；With
It is formed in the 2nd discharge chambe of the scroll wrap inner wall side of the convolution scroll.
12. refrigerating circulatory device as claimed in claim 11, it is characterised in that:
In the compressor, the end plate of the fixed scroll is provided with discharge room, and the discharge room is via tap Always it is connected to the discharge chambe.
13. refrigerating circulatory device as claimed in claim 11, it is characterised in that:
In the compressor, the motor part including driving the convolution scroll, being thermally cured property of the motor part insulation Material applies electric wire made of burning invests on conductor for coil across insulating coating.
14. refrigerating circulatory device as claimed in claim 11, it is characterised in that:
The compressor includes the closed container for storing the discharge chambe and the motor part,
The closed container includes:
The power supply terminal of oral area is set to via insulating element；
Connection terminal for the power supply terminal to be connect with lead；With
It is closely configured with the insulating element on the power supply terminal of the inside of the closed container, baked donut shape Insulating element.
CN201580026285.9A 2014-05-12 2015-04-27 Compressor and the refrigerating circulatory device for using it Active CN106460840B (en)

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JP2014-098337 2014-05-12
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JP2014098337 2014-05-12
JP2015040850A JP6507364B2 (en) 2014-05-12 2015-03-03 Refrigeration cycle device
JP2015040848A JP6507363B2 (en) 2014-05-12 2015-03-03 Refrigeration cycle device
JP2015-040848 2015-03-03
JP2015-040850 2015-03-03
PCT/JP2015/002256 WO2015174032A1 (en) 2014-05-12 2015-04-27 Compressor and refrigeration cycle device using same

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US10215451B2 (en) 2019-02-26
EP3144535B1 (en) 2018-08-29
SG11201609315WA (en) 2016-12-29

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